Abstract

Ultrashort pulses with a 25-μJ output energy were generated at 200 nm by dual broadband frequency doubling with a thin KBe2BO3F2 (KBBF) crystal at 1 kHz as the fourth harmonic of a high power Ti:sapphire laser. The spectrum was broadened to a spectral width of 2.25 nm. The pulse duration of 56 fs was measured by single-shot autocorrelation with two-photon fluorescence from self-trapped excitons in a CaF2 crystal.

© 2012 OSA

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2011

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

M. Ghotbi, P. Trabs, and M. Beutler, “Generation of high-energy, sub-20-fs pulses in the deep ultraviolet by using spectral broadening during filamentation in argon,” Opt. Lett. 36(4), 463–465 (2011).
[CrossRef] [PubMed]

2010

2009

T. Nagy and P. Simon, “Generation of 200-microJ, sub-25-fs deep-UV pulses using a noble-gas-filled hollow fiber,” Opt. Lett. 34(15), 2300–2302 (2009).
[CrossRef] [PubMed]

K. L. Ishikawa, K. Schiessl, E. Persson, and J. Burgdörfer, “Fine-scale oscillations in the wavelength and intensity dependence of high-order harmonic generation: Connection with channel closings,” Phys. Rev. A 79(3), 033411 (2009).
[CrossRef]

2008

C. Chen, G. Wang, X. Wang, Y. Zhu, Z. Xu, T. Kanai, and S. Watanabe, “Improved sellmeier equations and phase-matching characteristics in deep-ultraviolet region of KBe2BO3F2 crystal,” IEEE J. Quantum Electron. 44(7), 617–621 (2008).
[CrossRef]

2007

P. B. Corkum and F. Krausz, “Attosecond science,” Nat. Phys. 3(6), 381–387 (2007).
[CrossRef]

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

T. Fuji, T. Horio, and T. Suzuki, “Generation of 12 fs deep-ultraviolet pulses by four-wave mixing through filamentation in neon gas,” Opt. Lett. 32(17), 2481–2483 (2007).
[CrossRef] [PubMed]

2005

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

2004

2003

2002

1999

1998

Y. Nabekawa, Y. Kuramoto, T. Togashi, T. Sekikawa, and S. Watanabe, “Generation of 0.66-TW pulses at 1 kHz by a Ti:sapphire laser,” Opt. Lett. 23(17), 1384–1386 (1998).
[CrossRef] [PubMed]

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

1994

1990

G. Szabó and Z. Bor, “Broadband frequency doubler for femtosecond pulses,” Appl. Phys. B 50, 51–54 (1990).
[CrossRef]

K. Hata, M. Watanabe, and S. Watanabe, “Nonlinear processes in UV optical materials at 248 nm,” Appl. Phys. B 50(1), 55–59 (1990).
[CrossRef]

1989

O. E. Martinez, “Achromatic phase matching for second harmonic generation of femtosecond pulses,” IEEE J. Quantum Electron. 25(12), 2464–2468 (1989).
[CrossRef]

1988

1978

R. T. Williams, J. N. Bradford, and W. L. Faust, “Short-pulse optical studies of exciton relaxation and F-center formation in NaCl, KCl, and NaBr,” Phys. Rev. B 18(12), 7038–7057 (1978).
[CrossRef]

1969

W. H. Glenn, “Second-harmonic generation by picosecond optical pulses,” IEEE J. Quantum Electron. 5(6), 284–290 (1969).
[CrossRef]

1968

R. C. Miller, “Second harmonic generation with a broadband optical maser,” Phys. Lett. 26A, 177–178 (1968).

Aeschlimann, M.

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

Backus, S.

C. G. Durfee, S. Backus, H. C. Kapteyn, and M. M. Murnane, “Intense 8-fs pulse generation in the deep ultraviolet,” Opt. Lett. 24(10), 697–699 (1999).
[CrossRef] [PubMed]

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

Bauer, M.

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

Beutler, M.

Bor, Z.

G. Szabó and Z. Bor, “Broadband frequency doubler for femtosecond pulses,” Appl. Phys. B 50, 51–54 (1990).
[CrossRef]

Bradford, J. N.

R. T. Williams, J. N. Bradford, and W. L. Faust, “Short-pulse optical studies of exciton relaxation and F-center formation in NaCl, KCl, and NaBr,” Phys. Rev. B 18(12), 7038–7057 (1978).
[CrossRef]

Burgdörfer, J.

K. L. Ishikawa, K. Schiessl, E. Persson, and J. Burgdörfer, “Fine-scale oscillations in the wavelength and intensity dependence of high-order harmonic generation: Connection with channel closings,” Phys. Rev. A 79(3), 033411 (2009).
[CrossRef]

Chang, Z.

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

Chen, C.

Chen, C. T.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Corkum, P. B.

P. B. Corkum and F. Krausz, “Attosecond science,” Nat. Phys. 3(6), 381–387 (2007).
[CrossRef]

Durfee, C. G.

C. G. Durfee, S. Backus, H. C. Kapteyn, and M. M. Murnane, “Intense 8-fs pulse generation in the deep ultraviolet,” Opt. Lett. 24(10), 697–699 (1999).
[CrossRef] [PubMed]

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

Eguchi, R.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Endoh, A.

Faust, W. L.

R. T. Williams, J. N. Bradford, and W. L. Faust, “Short-pulse optical studies of exciton relaxation and F-center formation in NaCl, KCl, and NaBr,” Phys. Rev. B 18(12), 7038–7057 (1978).
[CrossRef]

Fuji, T.

Ghotbi, M.

Glenn, W. H.

W. H. Glenn, “Second-harmonic generation by picosecond optical pulses,” IEEE J. Quantum Electron. 5(6), 284–290 (1969).
[CrossRef]

Hata, K.

K. Hata, M. Watanabe, and S. Watanabe, “Nonlinear processes in UV optical materials at 248 nm,” Appl. Phys. B 50(1), 55–59 (1990).
[CrossRef]

Herne, C.

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

Horio, T.

Ishida, Y.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Ishikawa, K. L.

K. L. Ishikawa, K. Schiessl, E. Persson, and J. Burgdörfer, “Fine-scale oscillations in the wavelength and intensity dependence of high-order harmonic generation: Connection with channel closings,” Phys. Rev. A 79(3), 033411 (2009).
[CrossRef]

Ishizaka, K.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Itatani, J.

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

Kanai, K.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Kanai, T.

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

C. Chen, G. Wang, X. Wang, Y. Zhu, Z. Xu, T. Kanai, and S. Watanabe, “Improved sellmeier equations and phase-matching characteristics in deep-ultraviolet region of KBe2BO3F2 crystal,” IEEE J. Quantum Electron. 44(7), 617–621 (2008).
[CrossRef]

T. Kanai, X. Zhou, T. Liu, A. Kosuge, T. Sekikawa, and S. Watanabe, “Generation of terawatt 10-fs blue pulses by compensation for pulse-front distortion in broadband frequency doubling,” Opt. Lett. 29(24), 2929–2931 (2004).
[CrossRef] [PubMed]

T. Sekikawa, A. Kosuge, T. Kanai, and S. Watanabe, “Nonlinear optics in the extreme ultraviolet,” Nature 432(7017), 605–608 (2004).
[CrossRef] [PubMed]

T. Togashi, T. Kanai, T. Sekikawa, S. Watanabe, C. Chen, C. Zhang, Z. Xu, and J. Wang, “Generation of vacuum-ultraviolet light by an optically contacted, prism-coupled KBe2BO3F2 crystal,” Opt. Lett. 28(4), 254–256 (2003).
[CrossRef] [PubMed]

T. Kanai, X. Zhou, T. Sekikawa, S. Watanabe, and T. Togashi, “Generation of subterawatt sub-10-fs blue pulses at 1-5 kHz by broadband frequency doubling,” Opt. Lett. 28(16), 1484–1486 (2003).
[CrossRef] [PubMed]

Kanetaka, F.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Kapteyn, H.

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

Kapteyn, H. C.

C. G. Durfee, S. Backus, H. C. Kapteyn, and M. M. Murnane, “Intense 8-fs pulse generation in the deep ultraviolet,” Opt. Lett. 24(10), 697–699 (1999).
[CrossRef] [PubMed]

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

Kiss, T.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Kittelmann, O.

Kobayashi, Y.

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

Kosuge, A.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

T. Kanai, X. Zhou, T. Liu, A. Kosuge, T. Sekikawa, and S. Watanabe, “Generation of terawatt 10-fs blue pulses by compensation for pulse-front distortion in broadband frequency doubling,” Opt. Lett. 29(24), 2929–2931 (2004).
[CrossRef] [PubMed]

T. Sekikawa, A. Kosuge, T. Kanai, and S. Watanabe, “Nonlinear optics in the extreme ultraviolet,” Nature 432(7017), 605–608 (2004).
[CrossRef] [PubMed]

Krausz, F.

P. B. Corkum and F. Krausz, “Attosecond science,” Nat. Phys. 3(6), 381–387 (2007).
[CrossRef]

Kuramoto, Y.

Liu, T.

Lu, J.

Martinez, O. E.

O. E. Martinez, “Achromatic phase matching for second harmonic generation of femtosecond pulses,” IEEE J. Quantum Electron. 25(12), 2464–2468 (1989).
[CrossRef]

Mathias, S.

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

Matsunami, M.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Miaja-Avila, L.

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

Midorikawa, K.

Miller, R. C.

R. C. Miller, “Second harmonic generation with a broadband optical maser,” Phys. Lett. 26A, 177–178 (1968).

Murnane, M. M.

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

C. G. Durfee, S. Backus, H. C. Kapteyn, and M. M. Murnane, “Intense 8-fs pulse generation in the deep ultraviolet,” Opt. Lett. 24(10), 697–699 (1999).
[CrossRef] [PubMed]

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

Nabekawa, Y.

Nagy, T.

Nikogosyan, D. N.

S. A. Slattery and D. N. Nikogosyan, “Two-photon absorption at 211 nm in fused silica, crystalline quartz and some alkali halides,” Opt. Commun. 228(1-3), 127–131 (2003).
[CrossRef]

Noack, F.

Nohara, M.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Ohtsuki, T.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Onuki, Y.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Persson, E.

K. L. Ishikawa, K. Schiessl, E. Persson, and J. Burgdörfer, “Fine-scale oscillations in the wavelength and intensity dependence of high-order harmonic generation: Connection with channel closings,” Phys. Rev. A 79(3), 033411 (2009).
[CrossRef]

Petrov, V.

Ringling, J.

Rundquist, A.

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

Saitoh, T.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Sarukura, N.

Schiessl, K.

K. L. Ishikawa, K. Schiessl, E. Persson, and J. Burgdörfer, “Fine-scale oscillations in the wavelength and intensity dependence of high-order harmonic generation: Connection with channel closings,” Phys. Rev. A 79(3), 033411 (2009).
[CrossRef]

Seifert, F.

Seki, T.

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

Sekikawa, T.

T. Kanai, X. Zhou, T. Liu, A. Kosuge, T. Sekikawa, and S. Watanabe, “Generation of terawatt 10-fs blue pulses by compensation for pulse-front distortion in broadband frequency doubling,” Opt. Lett. 29(24), 2929–2931 (2004).
[CrossRef] [PubMed]

T. Sekikawa, A. Kosuge, T. Kanai, and S. Watanabe, “Nonlinear optics in the extreme ultraviolet,” Nature 432(7017), 605–608 (2004).
[CrossRef] [PubMed]

T. Togashi, T. Kanai, T. Sekikawa, S. Watanabe, C. Chen, C. Zhang, Z. Xu, and J. Wang, “Generation of vacuum-ultraviolet light by an optically contacted, prism-coupled KBe2BO3F2 crystal,” Opt. Lett. 28(4), 254–256 (2003).
[CrossRef] [PubMed]

T. Kanai, X. Zhou, T. Sekikawa, S. Watanabe, and T. Togashi, “Generation of subterawatt sub-10-fs blue pulses at 1-5 kHz by broadband frequency doubling,” Opt. Lett. 28(16), 1484–1486 (2003).
[CrossRef] [PubMed]

C. Chen, J. Lu, T. Togashi, T. Suganuma, T. Sekikawa, S. Watanabe, Z. Xu, and J. Wang, “Second-harmonic generation from a KBe2 BO3F2 crystal in the deep ultraviolet,” Opt. Lett. 27(8), 637–639 (2002).
[CrossRef] [PubMed]

D. Yoshitomi, T. Shimizu, T. Sekikawa, and S. Watanabe, “Generation and focusing of submilliwatt-average-power 50-nm pulses by the fifth harmonic of a KrF laser,” Opt. Lett. 27(24), 2170–2172 (2002).
[CrossRef] [PubMed]

Y. Nabekawa, Y. Kuramoto, T. Togashi, T. Sekikawa, and S. Watanabe, “Generation of 0.66-TW pulses at 1 kHz by a Ti:sapphire laser,” Opt. Lett. 23(17), 1384–1386 (1998).
[CrossRef] [PubMed]

Shimizu, T.

Shimojima, T.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Shin, S.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Simon, P.

Slattery, S. A.

S. A. Slattery and D. N. Nikogosyan, “Two-photon absorption at 211 nm in fused silica, crystalline quartz and some alkali halides,” Opt. Commun. 228(1-3), 127–131 (2003).
[CrossRef]

Suganuma, T.

Sukegawa, T.

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

Suzuki, T.

Szabó, G.

G. Szabó and Z. Bor, “Broadband frequency doubler for femtosecond pulses,” Appl. Phys. B 50, 51–54 (1990).
[CrossRef]

Takagi, H.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Takahashi, E.

Togashi, T.

Trabs, P.

Wang, G.

C. Chen, G. Wang, X. Wang, Y. Zhu, Z. Xu, T. Kanai, and S. Watanabe, “Improved sellmeier equations and phase-matching characteristics in deep-ultraviolet region of KBe2BO3F2 crystal,” IEEE J. Quantum Electron. 44(7), 617–621 (2008).
[CrossRef]

Wang, J.

Wang, X.

C. Chen, G. Wang, X. Wang, Y. Zhu, Z. Xu, T. Kanai, and S. Watanabe, “Improved sellmeier equations and phase-matching characteristics in deep-ultraviolet region of KBe2BO3F2 crystal,” IEEE J. Quantum Electron. 44(7), 617–621 (2008).
[CrossRef]

Watanabe, M.

Watanabe, S.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

C. Chen, G. Wang, X. Wang, Y. Zhu, Z. Xu, T. Kanai, and S. Watanabe, “Improved sellmeier equations and phase-matching characteristics in deep-ultraviolet region of KBe2BO3F2 crystal,” IEEE J. Quantum Electron. 44(7), 617–621 (2008).
[CrossRef]

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

T. Sekikawa, A. Kosuge, T. Kanai, and S. Watanabe, “Nonlinear optics in the extreme ultraviolet,” Nature 432(7017), 605–608 (2004).
[CrossRef] [PubMed]

T. Kanai, X. Zhou, T. Liu, A. Kosuge, T. Sekikawa, and S. Watanabe, “Generation of terawatt 10-fs blue pulses by compensation for pulse-front distortion in broadband frequency doubling,” Opt. Lett. 29(24), 2929–2931 (2004).
[CrossRef] [PubMed]

T. Kanai, X. Zhou, T. Sekikawa, S. Watanabe, and T. Togashi, “Generation of subterawatt sub-10-fs blue pulses at 1-5 kHz by broadband frequency doubling,” Opt. Lett. 28(16), 1484–1486 (2003).
[CrossRef] [PubMed]

T. Togashi, T. Kanai, T. Sekikawa, S. Watanabe, C. Chen, C. Zhang, Z. Xu, and J. Wang, “Generation of vacuum-ultraviolet light by an optically contacted, prism-coupled KBe2BO3F2 crystal,” Opt. Lett. 28(4), 254–256 (2003).
[CrossRef] [PubMed]

D. Yoshitomi, T. Shimizu, T. Sekikawa, and S. Watanabe, “Generation and focusing of submilliwatt-average-power 50-nm pulses by the fifth harmonic of a KrF laser,” Opt. Lett. 27(24), 2170–2172 (2002).
[CrossRef] [PubMed]

C. Chen, J. Lu, T. Togashi, T. Suganuma, T. Sekikawa, S. Watanabe, Z. Xu, and J. Wang, “Second-harmonic generation from a KBe2 BO3F2 crystal in the deep ultraviolet,” Opt. Lett. 27(8), 637–639 (2002).
[CrossRef] [PubMed]

Y. Nabekawa, Y. Kuramoto, T. Togashi, T. Sekikawa, and S. Watanabe, “Generation of 0.66-TW pulses at 1 kHz by a Ti:sapphire laser,” Opt. Lett. 23(17), 1384–1386 (1998).
[CrossRef] [PubMed]

K. Hata, M. Watanabe, and S. Watanabe, “Nonlinear processes in UV optical materials at 248 nm,” Appl. Phys. B 50(1), 55–59 (1990).
[CrossRef]

N. Sarukura, M. Watanabe, A. Endoh, and S. Watanabe, “Single-shot measurement of subpicosecond KrF pulse width by three-photon fluorescence of the XeF visible transition,” Opt. Lett. 13(11), 996–998 (1988).
[CrossRef] [PubMed]

Williams, R. T.

R. T. Williams, J. N. Bradford, and W. L. Faust, “Short-pulse optical studies of exciton relaxation and F-center formation in NaCl, KCl, and NaBr,” Phys. Rev. B 18(12), 7038–7057 (1978).
[CrossRef]

Xu, Z.

Yamamoto, T.

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

Yokoya, T.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Yoshitomi, D.

Zhang, C.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

T. Togashi, T. Kanai, T. Sekikawa, S. Watanabe, C. Chen, C. Zhang, Z. Xu, and J. Wang, “Generation of vacuum-ultraviolet light by an optically contacted, prism-coupled KBe2BO3F2 crystal,” Opt. Lett. 28(4), 254–256 (2003).
[CrossRef] [PubMed]

Zhou, C.

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

Zhou, X.

Zhu, Y.

C. Chen, G. Wang, X. Wang, Y. Zhu, Z. Xu, T. Kanai, and S. Watanabe, “Improved sellmeier equations and phase-matching characteristics in deep-ultraviolet region of KBe2BO3F2 crystal,” IEEE J. Quantum Electron. 44(7), 617–621 (2008).
[CrossRef]

Appl. Phys. B

G. Szabó and Z. Bor, “Broadband frequency doubler for femtosecond pulses,” Appl. Phys. B 50, 51–54 (1990).
[CrossRef]

K. Hata, M. Watanabe, and S. Watanabe, “Nonlinear processes in UV optical materials at 248 nm,” Appl. Phys. B 50(1), 55–59 (1990).
[CrossRef]

Appl. Phys. Express

C. Zhou, T. Seki, T. Sukegawa, T. Kanai, J. Itatani, Y. Kobayashi, and S. Watanabe, “Large-scale, high-efficiency transmission grating for Terawatt-class Ti:sapphire lasers at 1 kHz,” Appl. Phys. Express 4(7), 072701 (2011).
[CrossRef]

IEEE J. Quantum Electron.

C. Chen, G. Wang, X. Wang, Y. Zhu, Z. Xu, T. Kanai, and S. Watanabe, “Improved sellmeier equations and phase-matching characteristics in deep-ultraviolet region of KBe2BO3F2 crystal,” IEEE J. Quantum Electron. 44(7), 617–621 (2008).
[CrossRef]

W. H. Glenn, “Second-harmonic generation by picosecond optical pulses,” IEEE J. Quantum Electron. 5(6), 284–290 (1969).
[CrossRef]

O. E. Martinez, “Achromatic phase matching for second harmonic generation of femtosecond pulses,” IEEE J. Quantum Electron. 25(12), 2464–2468 (1989).
[CrossRef]

Nat. Phys.

P. B. Corkum and F. Krausz, “Attosecond science,” Nat. Phys. 3(6), 381–387 (2007).
[CrossRef]

Nature

T. Sekikawa, A. Kosuge, T. Kanai, and S. Watanabe, “Nonlinear optics in the extreme ultraviolet,” Nature 432(7017), 605–608 (2004).
[CrossRef] [PubMed]

Opt. Commun.

S. A. Slattery and D. N. Nikogosyan, “Two-photon absorption at 211 nm in fused silica, crystalline quartz and some alkali halides,” Opt. Commun. 228(1-3), 127–131 (2003).
[CrossRef]

Opt. Lett.

N. Sarukura, M. Watanabe, A. Endoh, and S. Watanabe, “Single-shot measurement of subpicosecond KrF pulse width by three-photon fluorescence of the XeF visible transition,” Opt. Lett. 13(11), 996–998 (1988).
[CrossRef] [PubMed]

F. Seifert, J. Ringling, F. Noack, V. Petrov, and O. Kittelmann, “Generation of tunable femtosecond pulses to as low as 172.7 nm by sum-frequency mixing in lithium triborate,” Opt. Lett. 19(19), 1538–1540 (1994).
[CrossRef] [PubMed]

Y. Nabekawa, Y. Kuramoto, T. Togashi, T. Sekikawa, and S. Watanabe, “Generation of 0.66-TW pulses at 1 kHz by a Ti:sapphire laser,” Opt. Lett. 23(17), 1384–1386 (1998).
[CrossRef] [PubMed]

C. G. Durfee, S. Backus, H. C. Kapteyn, and M. M. Murnane, “Intense 8-fs pulse generation in the deep ultraviolet,” Opt. Lett. 24(10), 697–699 (1999).
[CrossRef] [PubMed]

C. Chen, J. Lu, T. Togashi, T. Suganuma, T. Sekikawa, S. Watanabe, Z. Xu, and J. Wang, “Second-harmonic generation from a KBe2 BO3F2 crystal in the deep ultraviolet,” Opt. Lett. 27(8), 637–639 (2002).
[CrossRef] [PubMed]

E. Takahashi, Y. Nabekawa, and K. Midorikawa, “Generation of 10- microJ coherent extreme-ultraviolet light by use of high-order harmonics,” Opt. Lett. 27(21), 1920–1922 (2002).
[CrossRef] [PubMed]

D. Yoshitomi, T. Shimizu, T. Sekikawa, and S. Watanabe, “Generation and focusing of submilliwatt-average-power 50-nm pulses by the fifth harmonic of a KrF laser,” Opt. Lett. 27(24), 2170–2172 (2002).
[CrossRef] [PubMed]

T. Togashi, T. Kanai, T. Sekikawa, S. Watanabe, C. Chen, C. Zhang, Z. Xu, and J. Wang, “Generation of vacuum-ultraviolet light by an optically contacted, prism-coupled KBe2BO3F2 crystal,” Opt. Lett. 28(4), 254–256 (2003).
[CrossRef] [PubMed]

T. Kanai, X. Zhou, T. Sekikawa, S. Watanabe, and T. Togashi, “Generation of subterawatt sub-10-fs blue pulses at 1-5 kHz by broadband frequency doubling,” Opt. Lett. 28(16), 1484–1486 (2003).
[CrossRef] [PubMed]

T. Kanai, X. Zhou, T. Liu, A. Kosuge, T. Sekikawa, and S. Watanabe, “Generation of terawatt 10-fs blue pulses by compensation for pulse-front distortion in broadband frequency doubling,” Opt. Lett. 29(24), 2929–2931 (2004).
[CrossRef] [PubMed]

T. Fuji, T. Horio, and T. Suzuki, “Generation of 12 fs deep-ultraviolet pulses by four-wave mixing through filamentation in neon gas,” Opt. Lett. 32(17), 2481–2483 (2007).
[CrossRef] [PubMed]

T. Nagy and P. Simon, “Generation of 200-microJ, sub-25-fs deep-UV pulses using a noble-gas-filled hollow fiber,” Opt. Lett. 34(15), 2300–2302 (2009).
[CrossRef] [PubMed]

M. Ghotbi, M. Beutler, and F. Noack, “Generation of 2.5 μJ vacuum ultraviolet pulses with sub-50 fs duration by noncollinear four-wave mixing in argon,” Opt. Lett. 35(20), 3492–3494 (2010).
[CrossRef] [PubMed]

M. Ghotbi, P. Trabs, and M. Beutler, “Generation of high-energy, sub-20-fs pulses in the deep ultraviolet by using spectral broadening during filamentation in argon,” Opt. Lett. 36(4), 463–465 (2011).
[CrossRef] [PubMed]

Phys. Lett.

R. C. Miller, “Second harmonic generation with a broadband optical maser,” Phys. Lett. 26A, 177–178 (1968).

Phys. Rev. A

K. L. Ishikawa, K. Schiessl, E. Persson, and J. Burgdörfer, “Fine-scale oscillations in the wavelength and intensity dependence of high-order harmonic generation: Connection with channel closings,” Phys. Rev. A 79(3), 033411 (2009).
[CrossRef]

Phys. Rev. B

K. Ishizaka, T. Kiss, T. Yamamoto, Y. Ishida, T. Saitoh, M. Matsunami, R. Eguchi, T. Ohtsuki, A. Kosuge, T. Kanai, M. Nohara, H. Takagi, S. Watanabe, and S. Shin, “Femtosecond core-level photoemision spectroscopy on 1T-TaS2 using a 60-eV laser source,” Phys. Rev. B 83(8), 081104 (2011).
[CrossRef]

R. T. Williams, J. N. Bradford, and W. L. Faust, “Short-pulse optical studies of exciton relaxation and F-center formation in NaCl, KCl, and NaBr,” Phys. Rev. B 18(12), 7038–7057 (1978).
[CrossRef]

Phys. Rev. Lett.

T. Kiss, F. Kanetaka, T. Yokoya, T. Shimojima, K. Kanai, S. Shin, Y. Onuki, T. Togashi, C. Zhang, C. T. Chen, and S. Watanabe, “Photoemission spectroscopic evidence of gap anisotropy in an f-Electron superconductor,” Phys. Rev. Lett. 94(5), 057001 (2005).
[CrossRef] [PubMed]

Rev. Sci. Instrum.

S. Mathias, L. Miaja-Avila, M. M. Murnane, H. Kapteyn, M. Aeschlimann, and M. Bauer, “Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer,” Rev. Sci. Instrum. 78(8), 083105 (2007).
[CrossRef] [PubMed]

Science

A. Rundquist, C. G. Durfee, Z. Chang, C. Herne, S. Backus, M. M. Murnane, and H. C. Kapteyn, “Phase-matched generation of coherent soft X-rays,” Science 280(5368), 1412–1415 (1998).
[CrossRef] [PubMed]

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Figures (6)

Fig. 1
Fig. 1

Calculation of the acceptable spectral width and corresponding pulse width for frequency doubling from 2ω to 4ω pulses in two cases. (a) Direct frequency doubling (DFD). GVM, acceptable spectral widths (Δλ and Δλ), corresponding shortest pulse duration (τp) at 4ω are plotted against the wavelength at 180-220 nm (4ω) and 360-440 nm (2ω), respectively. (b) Broadband frequency doubling (BFD). Acceptable spectral widths (Δλ2ω-BFD and Δλ4ω-BFD), corresponding shortest pulse duration (τp-BFD) at 4ω are plotted by changing the wavelength at 4ω and 2ω pulses, respectively.

Fig. 2
Fig. 2

Schematic diagram of the dual-BFD system and the structure of a KBBF prism coupled device (KBBF-PCD). G1 and G2: diffraction gratings, the groove densities are 300 and 1200 lines/mm, respectively. M1 and M2: plane mirrors, HR (high reflection)@750-850 nm; C1 and C2: concave mirrors (radii of curvature are RC1 = 3000 mm and RC2 = 1500 mm), HR@750-850 nm; WP: zero order half waveplate@400 nm; C3-C4: concave mirrors (RC3 = 2000 mm and RC4 = 750 mm), HR@370-430 nm; C5-C6: concave mirrors (RC5 = 750 mm and RC6 = 4000 mm), HR@195-205 nm; M3: plane mirror, HR@195-205 nm. Thicknesses of BBO and KBBF are 150 μm and 230 μm, respectively. The KBBF is stacked between two fused quartz prisms with an apex angle of 52°.

Fig. 3
Fig. 3

(a) Output power after BBO versus input power of fundamental pulses. The maximum output power after BBO was 1.4 W with a 150-μm-thick BBO. (b) The retrieved pulse shape and phase of the 2ω pulses measured by SD-FROG with a 100-μm-thick CaF2 plate. The pulse duration was 16 fs. The used grid size was 128 × 128, and the root mean square (RMS) error was 1.53%.

Fig. 4
Fig. 4

(a) Output power after KBBF-PCD versus input power of 2ω pulses. (b) Measured spectrum of 4ω and 2ω pulses. The spectrum of 4ω pulses is ranged from 196 to 205 nm, and the FWHM spectral width is 2.25 nm.

Fig. 5
Fig. 5

(a) Schematic of two-photon fluorescence (TPF) process. (b) Measured spectrum of two-photon fluorescence in CaF2. (c) Schematic of the autocorrelation measurement system by TPF. M1-M3: Al mirrors; the thickness of CaF2 is 10 mm.

Fig. 6
Fig. 6

(a) A typical image on the CCD, the inset scale indicates 50 μm in CaF2. (b) The autocorrelation trace of the 4ω pulses. The FWHM pulse width is 56 fs by assuming a Gaussian shape.

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

Δτ= D c [ λ 2ω n o λ | 2ω λ n e λ | ],
Δ λ 2ω = 1.39 λ 2ω 2 πcΔτ ,
Δ λ 4ω =0.35Δ λ 2ω .
τ p = k cΔ λ 4ω λ 4ω 2 (k=0.441),
Δ λ 2ω-BFD =1.33 λ 2ω D| n o ( dθ dλ | 2ω ) 2 + 1 λ d n o dλ | 2ω | ,
Δ λ 4ω-BFD =0.35Δ λ 2ω-BFD ,
τ p-BFD = k cΔ λ 4ω-BFD λ 2 (k=0.441).

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