Abstract

We have successfully transported subterahertz-wave (sub-THz-wave) coherent synchrotron radiation (CSR) from an accelerator room to an experimental room by using an existing IR free-electron laser (FEL) beamline at the Laboratory for Electron Beam Research and Application at Nihon University. The power of the transported CSR was 50 nJ per macropulse, and it was available at frequencies of 0.1–0.3 THz. From two-dimensional imaging performed with the sub-THz-wave CSR, metallic structures concealed by plastic in a smart card were nondestructively detected at a spatial resolution of 1.4 mm. We also verified the existence of hydrated water in a crystal by using chemometric two-band spectroscopy with the sub-THz-wave CSR and IR FEL. Pioneering applications, such as more reliable material identification, can be anticipated from this complex light source composed from the sub-THz-wave CSR and IR FEL beams.

© 2014 Optical Society of America

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  1. M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
    [CrossRef]
  2. D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
    [CrossRef]
  3. R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
    [CrossRef]
  4. R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
    [CrossRef]
  5. P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.
  6. N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
    [CrossRef]
  7. N. Sei, H. Ogawa, and K. Yamada, “Lasing of infrared free-election lasers using the storage ring NIJI-IV,” Opt. Lett. 34, 1843–1845 (2009).
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  8. N. Sei, H. Ogawa, and K. Yamada, “Multi-range free-electron laser with a pair of dielectric multilayer mirrors,” Appl. Phys. Lett. 101, 144101 (2012).
    [CrossRef]
  9. G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
    [CrossRef]
  10. S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
    [CrossRef]
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    [CrossRef]
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  14. Y. Kawashima, School of Dentistry at Matsudo, Nihon University, Chiba, Japan, is preparing a manuscript to be called “Imaging of tumor tissue using subterahertz-wave coherent synchrotron radiation and IR FEL.”
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    [CrossRef]
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  17. T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
    [CrossRef]
  18. T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
    [CrossRef]
  19. K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.
  20. J. L. Casson, K. T. Gahagan, D. A. Scrymgeour, R. K. Jain, J. M. Robinson, V. Gopalan, and R. K. Sander, “Electro-optic coefficients of lithium tantalate at near-infrared wavelengths,” J. Opt. Soc. Am. B 21, 1948–1952 (2004).
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    [CrossRef]
  22. M. Schall, H. Helm, and S. Keiding, “Far infrared properties of electro-optic crystals measured by THz time-domain spectroscopy,” Int. J. Infrared Millim. Waves 20, 595–604 (1999).
    [CrossRef]
  23. D. H. Martin and E. Puplett, “Polarised interferometric spectrometry for the millimetre and submillimetre spectrum,” Infrared Phys. 10, 105–109 (1970).
    [CrossRef]
  24. M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
    [CrossRef]
  25. Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
    [CrossRef]
  26. Y. Jung and J. Hwang, “Near-infrared studies of glucose and sucrose in aqueous solutions: water displacement effect and red shift in water absorption from water-solute interaction,” Appl. Spectrosc. 67, 171–180 (2013).
    [CrossRef]
  27. J. T. Kindt and C. A. Schmuttenmaer, “Far-infrared dielectric properties of polar liquids probed by femtosecond terahertz pulse spectroscopy,” J. Phys. Chem. 100, 10373–10379 (1996).
    [CrossRef]
  28. E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
    [CrossRef]

2014 (1)

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

2013 (3)

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

Y. Jung and J. Hwang, “Near-infrared studies of glucose and sucrose in aqueous solutions: water displacement effect and red shift in water absorption from water-solute interaction,” Appl. Spectrosc. 67, 171–180 (2013).
[CrossRef]

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

2012 (2)

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Multi-range free-electron laser with a pair of dielectric multilayer mirrors,” Appl. Phys. Lett. 101, 144101 (2012).
[CrossRef]

2011 (1)

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

2010 (2)

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

2009 (2)

S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Lasing of infrared free-election lasers using the storage ring NIJI-IV,” Opt. Lett. 34, 1843–1845 (2009).
[CrossRef]

2007 (2)

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, “Terahertz imaging diagnostics of cancer tissues with a chemometrics technique,” Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

2004 (1)

2002 (2)

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

2000 (1)

M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
[CrossRef]

1999 (1)

M. Schall, H. Helm, and S. Keiding, “Far infrared properties of electro-optic crystals measured by THz time-domain spectroscopy,” Int. J. Infrared Millim. Waves 20, 595–604 (1999).
[CrossRef]

1996 (1)

J. T. Kindt and C. A. Schmuttenmaer, “Far-infrared dielectric properties of polar liquids probed by femtosecond terahertz pulse spectroscopy,” J. Phys. Chem. 100, 10373–10379 (1996).
[CrossRef]

1993 (2)

R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
[CrossRef]

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

1980 (1)

M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
[CrossRef]

1977 (1)

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

1970 (1)

D. H. Martin and E. Puplett, “Polarised interferometric spectrometry for the millimetre and submillimetre spectrum,” Infrared Phys. 10, 105–109 (1970).
[CrossRef]

Alayoglu, S.

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

Arsov, V.

S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
[CrossRef]

Bakker, R. J.

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

Bechtel, H. A.

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

Berset, J. M.

R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
[CrossRef]

Boughton, R. I.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Budde, M.

M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
[CrossRef]

Carr, G. L.

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

Casalbuoni, S.

S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
[CrossRef]

Casson, J. L.

Cheney, C. P.

M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
[CrossRef]

Clarke, J. A.

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

Deacon, D. A. G.

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

Dekorsy, T.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Dunning, D. J.

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

Elias, L. R.

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

Enomoto, A.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Evtushenko, P.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Feldman, L. C.

M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
[CrossRef]

Fukuda, S.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Furukawa, K.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Gabriel, F.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Gahagan, K. T.

Glotin, F.

R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
[CrossRef]

Gopalan, V.

Gross, E.

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

Grosse, E.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Hasegawa, T.

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

Hayakawa, K.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Hayakawa, T.

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Hayakawa, Y.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Helm, H.

M. Schall, H. Helm, and S. Keiding, “Far infrared properties of electro-optic crystals measured by THz time-domain spectroscopy,” Int. J. Infrared Millim. Waves 20, 595–604 (1999).
[CrossRef]

Helm, M.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Hoshina, H.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, “Terahertz imaging diagnostics of cancer tissues with a chemometrics technique,” Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Hwang, J.

Inagaki, M.

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

Ishiwata, K.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

Itoh, H.

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Itoh, K.

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Iwai, S.

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Jain, R. K.

Jaroszynski, D.

R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
[CrossRef]

Jaroszynski, D. A.

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

Jordan, K.

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

Jung, Y.

Kanno, K.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

Kato, M.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

Kawahata, K.

M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
[CrossRef]

Kawashima, Y.

Y. Kawashima, School of Dentistry at Matsudo, Nihon University, Chiba, Japan, is preparing a manuscript to be called “Imaging of tumor tissue using subterahertz-wave coherent synchrotron radiation and IR FEL.”

Keiding, S.

M. Schall, H. Helm, and S. Keiding, “Far infrared properties of electro-optic crystals measured by THz time-domain spectroscopy,” Int. J. Infrared Millim. Waves 20, 595–604 (1999).
[CrossRef]

Kindt, J. T.

J. T. Kindt and C. A. Schmuttenmaer, “Far-infrared dielectric properties of polar liquids probed by femtosecond terahertz pulse spectroscopy,” J. Phys. Chem. 100, 10373–10379 (1996).
[CrossRef]

Kojima, H.

M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
[CrossRef]

Krenz, M.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Kuwada, T.

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Lehnert, U.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Leonard, S.

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

Liu, H.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Lüpke, G.

M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
[CrossRef]

Madey, J. M. J.

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

Martin, D. H.

D. H. Martin and E. Puplett, “Polarised interferometric spectrometry for the millimetre and submillimetre spectrum,” Infrared Phys. 10, 105–109 (1970).
[CrossRef]

Martin, M. C.

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

McKinney, W. R.

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

Michel, P.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Michizono, S.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Miyamoto, K.

M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
[CrossRef]

Miyoshi, N.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, “Terahertz imaging diagnostics of cancer tissues with a chemometrics technique,” Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Nakajima, S.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, “Terahertz imaging diagnostics of cancer tissues with a chemometrics technique,” Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Nakao, K.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Nakaya, H.

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Nakazawa, H.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

Neil, G. R.

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

Nogami, K.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

Numata, Y.

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Oepts, D.

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

Ogawa, H.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Multi-range free-electron laser with a pair of dielectric multilayer mirrors,” Appl. Phys. Lett. 101, 144101 (2012).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Lasing of infrared free-election lasers using the storage ring NIJI-IV,” Opt. Lett. 34, 1843–1845 (2009).
[CrossRef]

Ohsawa, S.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Ortega, J. M.

R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
[CrossRef]

Otani, C.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, “Terahertz imaging diagnostics of cancer tissues with a chemometrics technique,” Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Prazeres, R.

R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
[CrossRef]

Puplett, E.

D. H. Martin and E. Puplett, “Polarised interferometric spectrometry for the millimetre and submillimetre spectrum,” Infrared Phys. 10, 105–109 (1970).
[CrossRef]

Ramian, G. J.

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

Robinson, J. M.

Saito, S.

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Sakae, T.

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Sakai, K.

M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
[CrossRef]

Sakai, T.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Sander, R. K.

Sato, I.

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Sato, M.

M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
[CrossRef]

Sato, Y.

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Saveliev, Y.

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

Schall, M.

M. Schall, H. Helm, and S. Keiding, “Far infrared properties of electro-optic crystals measured by THz time-domain spectroscopy,” Int. J. Infrared Millim. Waves 20, 595–604 (1999).
[CrossRef]

Schmidt, B.

S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
[CrossRef]

Schmüser, P.

S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
[CrossRef]

Schmuttenmaer, C. A.

J. T. Kindt and C. A. Schmuttenmaer, “Far-infrared dielectric properties of polar liquids probed by femtosecond terahertz pulse spectroscopy,” J. Phys. Chem. 100, 10373–10379 (1996).
[CrossRef]

Schwettman, H. A.

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

Scrymgeour, D. A.

Sei, N.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Multi-range free-electron laser with a pair of dielectric multilayer mirrors,” Appl. Phys. Lett. 101, 144101 (2012).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Lasing of infrared free-election lasers using the storage ring NIJI-IV,” Opt. Lett. 34, 1843–1845 (2009).
[CrossRef]

Seidel, W.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Shishikura, F.

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

Shu, X.

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

Smith, A. D.

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

Smith, T. I.

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

Somorjai, G. A.

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

Surman, M.

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

Suwa, T.

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Suzuki, K.

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Takagi, T.

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

Takahashi, Y.

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Tanaka, T.

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

Thompson, N. R.

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

Tolk, N. H.

M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
[CrossRef]

Toste, F. D.

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

Tsuchiya, K.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

van Amersfoort, P. W.

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

van der Geer, C. A. J.

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

van der Meer, A. F. G.

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

Wang, J.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Wesch, S.

S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
[CrossRef]

Williams, G. P.

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

Wohlfarth, D.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Wolf, A.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Wu, J.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Wünsch, R.

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Xia, Z.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Yakushi, K.

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Yamada, K.

N. Sei, H. Ogawa, and K. Yamada, “Multi-range free-electron laser with a pair of dielectric multilayer mirrors,” Appl. Phys. Lett. 101, 144101 (2012).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Lasing of infrared free-election lasers using the storage ring NIJI-IV,” Opt. Lett. 34, 1843–1845 (2009).
[CrossRef]

Yamamoto, K.

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Yamashita, M.

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, “Terahertz imaging diagnostics of cancer tissues with a chemometrics technique,” Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

Yan, T.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Yao, S.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Yokoyama, K.

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

Zheng, F.

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

Acta Crystallogr. Sect. D (1)

T. Kuwada, T. Hasegawa, T. Takagi, T. Sakae, I. Sato, and F. Shishikura, “Involvement of the distal Arg residue in Cl-binding of midge larval haemoglobin,” Acta Crystallogr. Sect. D 67, 488–495 (2011).
[CrossRef]

Appl. Phys. Lett. (2)

S. Nakajima, H. Hoshina, M. Yamashita, C. Otani, and N. Miyoshi, “Terahertz imaging diagnostics of cancer tissues with a chemometrics technique,” Appl. Phys. Lett. 90, 041102 (2007).
[CrossRef]

N. Sei, H. Ogawa, and K. Yamada, “Multi-range free-electron laser with a pair of dielectric multilayer mirrors,” Appl. Phys. Lett. 101, 144101 (2012).
[CrossRef]

Appl. Spectrosc. (1)

Infrared Phys. (1)

D. H. Martin and E. Puplett, “Polarised interferometric spectrometry for the millimetre and submillimetre spectrum,” Infrared Phys. 10, 105–109 (1970).
[CrossRef]

Int. J. Infrared Millim. Waves (1)

M. Schall, H. Helm, and S. Keiding, “Far infrared properties of electro-optic crystals measured by THz time-domain spectroscopy,” Int. J. Infrared Millim. Waves 20, 595–604 (1999).
[CrossRef]

J. Alloys Compd. (1)

T. Yan, H. Liu, J. Wang, F. Zheng, S. Yao, Z. Xia, J. Wu, and R. I. Boughton, “Influence of chemical reduction on optical and electrical properties of LiTaO3 crystal,” J. Alloys Compd. 497, 412–415 (2010).
[CrossRef]

J. Am. Chem. Soc. (1)

E. Gross, X. Shu, S. Alayoglu, H. A. Bechtel, M. C. Martin, F. D. Toste, and G. A. Somorjai, “In situ IR and x-ray high spatial-resolution microspectroscopy measurements of multistep organic transformation in flow microreactor catalyzed by Au nanoclusters,” J. Am. Chem. Soc. 136, 3624–3629 (2014).
[CrossRef]

J. Appl. Phys. (1)

R. J. Bakker, C. A. J. van der Geer, D. A. Jaroszynski, A. F. G. van der Meer, D. Oepts, and P. W. van Amersfoort, “Broadband tunability of a far‐infrared free‐electron laser,” J. Appl. Phys. 74, 1501–1509 (1993).
[CrossRef]

J. Inst. (1)

Y. Hayakawa, Y. Takahashi, T. Kuwada, T. Sakae, T. Tanaka, K. Nakao, K. Nogami, M. Inagaki, K. Hayakawa, and I. Sato, “X-ray imaging using a tunable coherent x-ray source based on parametric x-ray radiation,” J. Inst. 8, C08001 (2013).
[CrossRef]

J. Opt. Soc. Am. B (1)

J. Phys. Chem. (1)

J. T. Kindt and C. A. Schmuttenmaer, “Far-infrared dielectric properties of polar liquids probed by femtosecond terahertz pulse spectroscopy,” J. Phys. Chem. 100, 10373–10379 (1996).
[CrossRef]

J. Phys. D (1)

N. Sei, H. Ogawa, K. Hayakawa, T. Tanaka, Y. Hayakawa, K. Nakao, T. Sakai, K. Nogami, and M. Inagaki, “Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA,” J. Phys. D 46, 045104 (2013).
[CrossRef]

Jpn. J. Appl. Phys. (1)

M. Sato, K. Sakai, K. Kawahata, H. Kojima, and K. Miyamoto, “Measurement of electron cyclotron emission in JIPP T-II,” Jpn. J. Appl. Phys. 19, 577–578 (1980).
[CrossRef]

Lasers Med. Sci. (1)

T. Sakae, Y. Sato, Y. Numata, T. Suwa, T. Hayakawa, K. Suzuki, T. Kuwada, K. Hayakawa, Y. Hayakawa, T. Tanaka, and I. Sato, “Thermal ablation of FEL irradiation using gypsum as an indicator,” Lasers Med. Sci. 22, 15–20 (2007).
[CrossRef]

Nature (1)

G. L. Carr, M. C. Martin, W. R. McKinney, K. Jordan, G. R. Neil, and G. P. Williams, “High-power terahertz radiation from relativistic electrons,” Nature 420, 153–156 (2002).
[CrossRef]

Nucl. Instrum. Methods Phys. Res. A (3)

N. R. Thompson, D. J. Dunning, J. A. Clarke, M. Surman, A. D. Smith, Y. Saveliev, and S. Leonard, “First lasing of the ALICE infra-red free-electron laser,” Nucl. Instrum. Methods Phys. Res. A 680, 117–123 (2012).
[CrossRef]

R. Prazeres, J. M. Berset, F. Glotin, D. Jaroszynski, and J. M. Ortega, “Optical performance of the CLIO infrared FEL,” Nucl. Instrum. Methods Phys. Res. A 331, 15–19 (1993).
[CrossRef]

Y. Hayakawa, I. Sato, K. Hayakawa, T. Tanaka, H. Nakazawa, K. Yokoyama, K. Kanno, T. Sakai, K. Ishiwata, A. Enomoto, S. Fukuda, S. Ohsawa, K. Tsuchiya, and M. Kato, “First lasing of LEBRA FEL at Nihon University at a wavelength of 1.5  μm,” Nucl. Instrum. Methods Phys. Res. A 483, 29–33 (2002).
[CrossRef]

Opt. Lett. (1)

Phys. Rev. B (1)

H. Nakaya, K. Itoh, Y. Takahashi, H. Itoh, S. Iwai, S. Saito, K. Yamamoto, and K. Yakushi, “Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt,” Phys. Rev. B 81, 155111 (2010).
[CrossRef]

Phys. Rev. Lett. (2)

M. Budde, G. Lüpke, C. P. Cheney, N. H. Tolk, and L. C. Feldman, “Vibrational lifetime of bond-center hydrogen in crystalline silicon,” Phys. Rev. Lett. 85, 1452–1455 (2000).
[CrossRef]

D. A. G. Deacon, L. R. Elias, J. M. J. Madey, G. J. Ramian, H. A. Schwettman, and T. I. Smith, “First operation of a free-electron laser,” Phys. Rev. Lett. 38, 892–894 (1977).
[CrossRef]

Phys. Rev. ST Accel. Beams (1)

S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, and S. Wesch, “Ultrabroadband terahertz source and beamline based on coherent transition radiation,” Phys. Rev. ST Accel. Beams 12, 030705 (2009).
[CrossRef]

Other (4)

P. Michel, F. Gabriel, E. Grosse, P. Evtushenko, T. Dekorsy, M. Krenz, M. Helm, U. Lehnert, W. Seidel, R. Wünsch, D. Wohlfarth, and A. Wolf, “First lasing of the ELBE mid-IR FEL,” in Proceedings of the 26th International Free Electron Laser Conference, Trieste, Italy (2004), pp. 8–13.

Y. Kawashima, School of Dentistry at Matsudo, Nihon University, Chiba, Japan, is preparing a manuscript to be called “Imaging of tumor tissue using subterahertz-wave coherent synchrotron radiation and IR FEL.”

K. Nakao, K. Hayakawa, T. Tanaka, Y. Hayakawa, T. Sakai, I. Sato, K. Nogami, and M. Inagaki, “Analysis on variation factors of optical power at the LEBRA FEL,” in Proceedings of the 31st International Free Electron Laser Conference, Liverpool, England (2009), pp. 675–677.

K. Hayakawa, Y. Hayakawa, K. Nakao, K. Nogami, T. Tanaka, A. Enomoto, S. Fukuda, K. Furukawa, S. Michizono, S. Ohsawa, M. Inagaki, T. Kuwada, T. Sakai, and I. Sato, “Operation of near-infrared FEL at Nihon University,” in Proceedings of the 29th International Free Electron Laser Conference, Novosibirsk, Russia (2007), pp. 114–117.

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Figures (9)

Fig. 1.
Fig. 1.

Schematic layout of the experimental setup for the complex light source at LEBRA. For measurement systems, (a) was used in the wo-dimensional imaging experiment and (b) was used in the spectroscopy experiment. When we used the IR FEL, the Martin–Puplett-type interferometer was removed in (b).

Fig. 2.
Fig. 2.

Measured transmittance spectrum of the LiTaO3 crystal substrate in the wavelength region of 1.8–2.1 μm.

Fig. 3.
Fig. 3.

Calculated reflectance spectrum of the LiTaO3 crystal substrate in the frequency region of 0.05–0.4 THz. The angle of incidence of the CSR beam was 22.5°.

Fig. 4.
Fig. 4.

Measured profile of the vertical polarized component of the transported CSR beam using a D-band diode detector at the focal position of the parabolic mirror. Step intervals of an x-y axis translation stage were 0.5 mm in the horizontal direction and 1.0 mm in the vertical direction. The white and black areas represent high and low intensities, respectively.

Fig. 5.
Fig. 5.

Relative fluctuation of the CSR power measured every 90 s at the experimental room.

Fig. 6.
Fig. 6.

(a) Interferogram of the transported CSR measured with the Martin–Puplett-type interferometer using an optical path difference of ±40mm and (b) calculated spectrum of the transported CSR by the interferogram (dotted line) and spectrum after removing the influence of the interference of the LiTaO3 crystal substrate from the dotted line (solid line).

Fig. 7.
Fig. 7.

(a) Transmission image of a smart card measured by PXR with energy of 14 keV and an imaging plate. The spatial resolution was approximately 50 μm. (b) Transmission image of the smart card measured by the CSR beam and a D-band diode detector. The white and black areas in (a) and (b) represent high and low intensities, respectively. (c) Transmittance in the area surrounded by the dotted line in (b).

Fig. 8.
Fig. 8.

(a) Transmittance spectra of potassium alum anhydride (dotted line) and potassium alum hydrate (solid line) measured with a pyroelectric detector and the IR FEL in the wavelength region of 1.8–2.1 μm. (b) Ratio of the transmittance of potassium alum anhydride to that of potassium alum hydrate calculated from (a).

Fig. 9.
Fig. 9.

(a) Transmittance spectra of potassium alum anhydride (dotted line) and potassium alum hydrate (solid line) measured with a pyroelectric detector and the sub-THz-wave CSR in the frequency region of 0.1–0.3 THz. (b) Ratio of the transmittance of potassium alum anhydride to that of potassium alum hydrate calculated from (a).

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