Abstract

We demonstrate a scheme for efficient generation of a 5.9 eV coherent light source with an average power of 23 mW, 0.34 meV linewidth, and 73 MHz repetition rate from a Ti: sapphire picosecond mode-locked laser with an output power of 1 W. Second-harmonic light is generated in a passive optical cavity by a BiB3O6 crystal with a conversion efficiency as high as 67%. By focusing the second-harmonic light transmitted from the cavity into a β–BaB2O4 crystal, we obtain fourth-harmonic light at 5.9 eV. This light source offers stable operation for at least a week. We discuss the suitability of the laser light source for high-resolution angle-resolved photoelectron spectroscopy by comparing it with other sources (synchrotron radiation facilities and gas discharge lamp).

© 2012 OSA

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  1. As a review paperA. Damascelli, Z. Hussain, and Z. X. Shen, “Angle-resolved photoemission studies of the cuprate superconductors,” Rev. Mod. Phys.75, 473–541 (2003).
  2. 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]
  3. K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
    [CrossRef]
  4. T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
    [CrossRef] [PubMed]
  5. T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
    [CrossRef] [PubMed]
  6. W. S. Lee, I. M. Vishik, K. Tanaka, D. H. Lu, T. Sasagawa, N. Nagaosa, T. P. Devereaux, Z. Hussain, and Z. X. Shen, “Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212,” Nature450(7166), 81–84 (2007).
    [CrossRef] [PubMed]
  7. S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
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    [CrossRef] [PubMed]
  9. M. Arita, K. Shimada, H. Namatame, and M. Taniguchi, “High-Resolution and Low-Temperature Photoemission Spectroscopy at the Hisor Helical-Undulator Beamline,” Surf. Rev. Lett.9(09), 535–539 (2002).
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  14. 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]
  15. S. Hellmann, K. Rossnagel, M. Marczynski-Bühlow, and L. Kipp, “Vacuum space-charge effects in solid-state photoemission,” Phys. Rev. B79(3), 035402 (2009).
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  17. T. W. Hänsch and B. Couillaud, “Laser frequency stabilization by polarization spectroscopy of a reflecting reference cavity,” Opt. Commun.35(3), 441–444 (1980).
    [CrossRef]
  18. A. Yariv, Quantum Electronics, 3rd ed., (Wiley, New York, 1989).
  19. M. Ghotbi and M. Ebrahim-Zadeh, “990 mW average power, 52% efficient, high-repetition-rate picosecond-pulse generation in the blue with BiB3O6.,” Opt. Lett.30(24), 3395–3397 (2005).
    [CrossRef] [PubMed]
  20. W. J. Kozlovsky, C. D. Nabors, and R. L. Byer, “Efficient second harmonic generation of a diode-laser-pumped CW Nd:YAG laser using monolithic MgO:LiNbO3 external resonant cavities,” IEEE J. Quantum Electron.24(6), 913–919 (1988).
    [CrossRef]
  21. M. Ghotbi, Z. Sun, A. Majchrowski, E. Michalski, I. V. Kityk, and M. Ebrahim-Zadeh, “Efficient third harmonic generation of microjoule picosecond pulses at 355 nm in BiBO,” Appl. Phys. Lett.89(17), 173124 (2006).
    [CrossRef]
  22. M. Peltz, J. Bartschke, A. Borsutzky, R. Wallenstein, S. Vernay, T. Salva, and D. Rytz, “Harmonic generation in bismuth triborate (BiB3O6),” Appl. Phys. B81(4), 487–495 (2005).
    [CrossRef]
  23. T. Greber, O. Raetzo, T. J. Kreutz, P. Schwaller, W. Deichmann, E. Wetli, and J. Osterwalder, “A photoelectron spectrometer for k-space mapping above the Fermi level,” Rev. Sci. Instrum.68(12), 4549–4554 (1997).
    [CrossRef]
  24. A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
    [CrossRef] [PubMed]
  25. V. Petrov, F. Rotermund, F. Noack, R. Komatsu, T. Sugawara, and S. Uda, “Vacuum ultraviolet application of Li2B4O7 crystals: Generation of 100 fs pulses down to 170 nm,” J. Appl. Phys.84(11), 5887–5892 (1998).
    [CrossRef]

2012 (2)

J. Faure, J. Mauchain, E. Papalazarou, W. Yan, J. Pinon, M. Marsi, and L. Perfetti, “Full characterization and optimization of a femtosecond ultraviolet laser source for time and angle-resolved photoemission on solid surfaces,” Rev. Sci. Instrum.83(4), 043109 (2012).
[CrossRef] [PubMed]

A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
[CrossRef] [PubMed]

2011 (2)

P. Wernet, J. Gaudin, K. Godehusen, O. Schwarzkopf, and W. Eberhardt, “Femtosecond time-resolved photoelectron spectroscopy with a vacuum-ultraviolet photon source based on laser high-order harmonic generation,” Rev. Sci. Instrum.82(6), 063114 (2011).
[CrossRef] [PubMed]

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

2010 (2)

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
[CrossRef] [PubMed]

2009 (2)

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

S. Hellmann, K. Rossnagel, M. Marczynski-Bühlow, and L. Kipp, “Vacuum space-charge effects in solid-state photoemission,” Phys. Rev. B79(3), 035402 (2009).
[CrossRef]

2008 (2)

K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[CrossRef]

T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
[CrossRef] [PubMed]

2007 (1)

W. S. Lee, I. M. Vishik, K. Tanaka, D. H. Lu, T. Sasagawa, N. Nagaosa, T. P. Devereaux, Z. Hussain, and Z. X. Shen, “Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212,” Nature450(7166), 81–84 (2007).
[CrossRef] [PubMed]

2006 (2)

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
[CrossRef] [PubMed]

M. Ghotbi, Z. Sun, A. Majchrowski, E. Michalski, I. V. Kityk, and M. Ebrahim-Zadeh, “Efficient third harmonic generation of microjoule picosecond pulses at 355 nm in BiBO,” Appl. Phys. Lett.89(17), 173124 (2006).
[CrossRef]

2005 (3)

M. Peltz, J. Bartschke, A. Borsutzky, R. Wallenstein, S. Vernay, T. Salva, and D. Rytz, “Harmonic generation in bismuth triborate (BiB3O6),” Appl. Phys. B81(4), 487–495 (2005).
[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]

M. Ghotbi and M. Ebrahim-Zadeh, “990 mW average power, 52% efficient, high-repetition-rate picosecond-pulse generation in the blue with BiB3O6.,” Opt. Lett.30(24), 3395–3397 (2005).
[CrossRef] [PubMed]

2003 (2)

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]

As a review paperA. Damascelli, Z. Hussain, and Z. X. Shen, “Angle-resolved photoemission studies of the cuprate superconductors,” Rev. Mod. Phys.75, 473–541 (2003).

2002 (1)

M. Arita, K. Shimada, H. Namatame, and M. Taniguchi, “High-Resolution and Low-Temperature Photoemission Spectroscopy at the Hisor Helical-Undulator Beamline,” Surf. Rev. Lett.9(09), 535–539 (2002).
[CrossRef]

1998 (1)

V. Petrov, F. Rotermund, F. Noack, R. Komatsu, T. Sugawara, and S. Uda, “Vacuum ultraviolet application of Li2B4O7 crystals: Generation of 100 fs pulses down to 170 nm,” J. Appl. Phys.84(11), 5887–5892 (1998).
[CrossRef]

1997 (1)

T. Greber, O. Raetzo, T. J. Kreutz, P. Schwaller, W. Deichmann, E. Wetli, and J. Osterwalder, “A photoelectron spectrometer for k-space mapping above the Fermi level,” Rev. Sci. Instrum.68(12), 4549–4554 (1997).
[CrossRef]

1988 (1)

W. J. Kozlovsky, C. D. Nabors, and R. L. Byer, “Efficient second harmonic generation of a diode-laser-pumped CW Nd:YAG laser using monolithic MgO:LiNbO3 external resonant cavities,” IEEE J. Quantum Electron.24(6), 913–919 (1988).
[CrossRef]

1980 (1)

T. W. Hänsch and B. Couillaud, “Laser frequency stabilization by polarization spectroscopy of a reflecting reference cavity,” Opt. Commun.35(3), 441–444 (1980).
[CrossRef]

Aiura, Y.

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
[CrossRef] [PubMed]

Allison, T. K.

A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
[CrossRef] [PubMed]

Arita, M.

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

M. Arita, K. Shimada, H. Namatame, and M. Taniguchi, “High-Resolution and Low-Temperature Photoemission Spectroscopy at the Hisor Helical-Undulator Beamline,” Surf. Rev. Lett.9(09), 535–539 (2002).
[CrossRef]

Bartschke, J.

M. Peltz, J. Bartschke, A. Borsutzky, R. Wallenstein, S. Vernay, T. Salva, and D. Rytz, “Harmonic generation in bismuth triborate (BiB3O6),” Appl. Phys. B81(4), 487–495 (2005).
[CrossRef]

Behr, G.

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

Berger, H.

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

Borisenko, S. V.

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

Borsutzky, A.

M. Peltz, J. Bartschke, A. Borsutzky, R. Wallenstein, S. Vernay, T. Salva, and D. Rytz, “Harmonic generation in bismuth triborate (BiB3O6),” Appl. Phys. B81(4), 487–495 (2005).
[CrossRef]

Büchner, B.

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

Byer, R. L.

W. J. Kozlovsky, C. D. Nabors, and R. L. Byer, “Efficient second harmonic generation of a diode-laser-pumped CW Nd:YAG laser using monolithic MgO:LiNbO3 external resonant cavities,” IEEE J. Quantum Electron.24(6), 913–919 (1988).
[CrossRef]

Chainani, A.

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[CrossRef]

T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
[CrossRef] [PubMed]

Chen, C.

Chen, C. T.

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

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]

Chen, C.-T.

K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[CrossRef]

T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
[CrossRef] [PubMed]

Cingöz, A.

A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
[CrossRef] [PubMed]

Couillaud, B.

T. W. Hänsch and B. Couillaud, “Laser frequency stabilization by polarization spectroscopy of a reflecting reference cavity,” Opt. Commun.35(3), 441–444 (1980).
[CrossRef]

Cundiff, S. T.

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
[CrossRef] [PubMed]

Damascelli, A.

As a review paperA. Damascelli, Z. Hussain, and Z. X. Shen, “Angle-resolved photoemission studies of the cuprate superconductors,” Rev. Mod. Phys.75, 473–541 (2003).

Deichmann, W.

T. Greber, O. Raetzo, T. J. Kreutz, P. Schwaller, W. Deichmann, E. Wetli, and J. Osterwalder, “A photoelectron spectrometer for k-space mapping above the Fermi level,” Rev. Sci. Instrum.68(12), 4549–4554 (1997).
[CrossRef]

Dessau, D. S.

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
[CrossRef] [PubMed]

Devereaux, T. P.

W. S. Lee, I. M. Vishik, K. Tanaka, D. H. Lu, T. Sasagawa, N. Nagaosa, T. P. Devereaux, Z. Hussain, and Z. X. Shen, “Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212,” Nature450(7166), 81–84 (2007).
[CrossRef] [PubMed]

Douglas, J. F.

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
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P. Wernet, J. Gaudin, K. Godehusen, O. Schwarzkopf, and W. Eberhardt, “Femtosecond time-resolved photoelectron spectroscopy with a vacuum-ultraviolet photon source based on laser high-order harmonic generation,” Rev. Sci. Instrum.82(6), 063114 (2011).
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S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
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M. Ghotbi, Z. Sun, A. Majchrowski, E. Michalski, I. V. Kityk, and M. Ebrahim-Zadeh, “Efficient third harmonic generation of microjoule picosecond pulses at 355 nm in BiBO,” Appl. Phys. Lett.89(17), 173124 (2006).
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M. Ghotbi and M. Ebrahim-Zadeh, “990 mW average power, 52% efficient, high-repetition-rate picosecond-pulse generation in the blue with BiB3O6.,” Opt. Lett.30(24), 3395–3397 (2005).
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J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
[CrossRef] [PubMed]

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S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
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S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
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S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
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J. Faure, J. Mauchain, E. Papalazarou, W. Yan, J. Pinon, M. Marsi, and L. Perfetti, “Full characterization and optimization of a femtosecond ultraviolet laser source for time and angle-resolved photoemission on solid surfaces,” Rev. Sci. Instrum.83(4), 043109 (2012).
[CrossRef] [PubMed]

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J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
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A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
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S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

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P. Wernet, J. Gaudin, K. Godehusen, O. Schwarzkopf, and W. Eberhardt, “Femtosecond time-resolved photoelectron spectroscopy with a vacuum-ultraviolet photon source based on laser high-order harmonic generation,” Rev. Sci. Instrum.82(6), 063114 (2011).
[CrossRef] [PubMed]

Ghotbi, M.

M. Ghotbi, Z. Sun, A. Majchrowski, E. Michalski, I. V. Kityk, and M. Ebrahim-Zadeh, “Efficient third harmonic generation of microjoule picosecond pulses at 355 nm in BiBO,” Appl. Phys. Lett.89(17), 173124 (2006).
[CrossRef]

M. Ghotbi and M. Ebrahim-Zadeh, “990 mW average power, 52% efficient, high-repetition-rate picosecond-pulse generation in the blue with BiB3O6.,” Opt. Lett.30(24), 3395–3397 (2005).
[CrossRef] [PubMed]

Godehusen, K.

P. Wernet, J. Gaudin, K. Godehusen, O. Schwarzkopf, and W. Eberhardt, “Femtosecond time-resolved photoelectron spectroscopy with a vacuum-ultraviolet photon source based on laser high-order harmonic generation,” Rev. Sci. Instrum.82(6), 063114 (2011).
[CrossRef] [PubMed]

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S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
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T. Greber, O. Raetzo, T. J. Kreutz, P. Schwaller, W. Deichmann, E. Wetli, and J. Osterwalder, “A photoelectron spectrometer for k-space mapping above the Fermi level,” Rev. Sci. Instrum.68(12), 4549–4554 (1997).
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T. W. Hänsch and B. Couillaud, “Laser frequency stabilization by polarization spectroscopy of a reflecting reference cavity,” Opt. Commun.35(3), 441–444 (1980).
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A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
[CrossRef] [PubMed]

Hayashi, K.

S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
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S. Hellmann, K. Rossnagel, M. Marczynski-Bühlow, and L. Kipp, “Vacuum space-charge effects in solid-state photoemission,” Phys. Rev. B79(3), 035402 (2009).
[CrossRef]

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K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[CrossRef]

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S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
[CrossRef] [PubMed]

Hosaka, M.

S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
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W. S. Lee, I. M. Vishik, K. Tanaka, D. H. Lu, T. Sasagawa, N. Nagaosa, T. P. Devereaux, Z. Hussain, and Z. X. Shen, “Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212,” Nature450(7166), 81–84 (2007).
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S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
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Ishida, Y.

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
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Ishizaka, K.

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
[CrossRef] [PubMed]

K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[CrossRef]

Ito, T.

S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
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Izumi, S.

K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[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).
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Kanai, T.

T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
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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).
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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).
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Kapteyn, H. C.

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
[CrossRef] [PubMed]

Kasahara, S.

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

Katoh, M.

S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
[CrossRef] [PubMed]

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S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

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S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
[CrossRef] [PubMed]

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S. Hellmann, K. Rossnagel, M. Marczynski-Bühlow, and L. Kipp, “Vacuum space-charge effects in solid-state photoemission,” Phys. Rev. B79(3), 035402 (2009).
[CrossRef]

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T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[CrossRef]

T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
[CrossRef] [PubMed]

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]

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M. Ghotbi, Z. Sun, A. Majchrowski, E. Michalski, I. V. Kityk, and M. Ebrahim-Zadeh, “Efficient third harmonic generation of microjoule picosecond pulses at 355 nm in BiBO,” Appl. Phys. Lett.89(17), 173124 (2006).
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S. Kimura, T. Ito, M. Sakai, E. Nakamura, N. Kondo, T. Horigome, K. Hayashi, M. Hosaka, M. Katoh, T. Goto, T. Ejima, and K. Soda, “SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II,” Rev. Sci. Instrum.81(5), 053104 (2010).
[CrossRef] [PubMed]

Koralek, J. D.

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
[CrossRef] [PubMed]

Kordyuk, A. A.

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
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W. J. Kozlovsky, C. D. Nabors, and R. L. Byer, “Efficient second harmonic generation of a diode-laser-pumped CW Nd:YAG laser using monolithic MgO:LiNbO3 external resonant cavities,” IEEE J. Quantum Electron.24(6), 913–919 (1988).
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T. Greber, O. Raetzo, T. J. Kreutz, P. Schwaller, W. Deichmann, E. Wetli, and J. Osterwalder, “A photoelectron spectrometer for k-space mapping above the Fermi level,” Rev. Sci. Instrum.68(12), 4549–4554 (1997).
[CrossRef]

Lee, W. S.

W. S. Lee, I. M. Vishik, K. Tanaka, D. H. Lu, T. Sasagawa, N. Nagaosa, T. P. Devereaux, Z. Hussain, and Z. X. Shen, “Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212,” Nature450(7166), 81–84 (2007).
[CrossRef] [PubMed]

Lu, D. H.

W. S. Lee, I. M. Vishik, K. Tanaka, D. H. Lu, T. Sasagawa, N. Nagaosa, T. P. Devereaux, Z. Hussain, and Z. X. Shen, “Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212,” Nature450(7166), 81–84 (2007).
[CrossRef] [PubMed]

Majchrowski, A.

M. Ghotbi, Z. Sun, A. Majchrowski, E. Michalski, I. V. Kityk, and M. Ebrahim-Zadeh, “Efficient third harmonic generation of microjoule picosecond pulses at 355 nm in BiBO,” Appl. Phys. Lett.89(17), 173124 (2006).
[CrossRef]

Marczynski-Bühlow, M.

S. Hellmann, K. Rossnagel, M. Marczynski-Bühlow, and L. Kipp, “Vacuum space-charge effects in solid-state photoemission,” Phys. Rev. B79(3), 035402 (2009).
[CrossRef]

Marsi, M.

J. Faure, J. Mauchain, E. Papalazarou, W. Yan, J. Pinon, M. Marsi, and L. Perfetti, “Full characterization and optimization of a femtosecond ultraviolet laser source for time and angle-resolved photoemission on solid surfaces,” Rev. Sci. Instrum.83(4), 043109 (2012).
[CrossRef] [PubMed]

Matsuda, Y.

T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, and S. Shin, “Orbital-Independent Superconducting Gaps in Iron Pnictides,” Science332(6029), 564–567 (2011).
[CrossRef] [PubMed]

Mauchain, J.

J. Faure, J. Mauchain, E. Papalazarou, W. Yan, J. Pinon, M. Marsi, and L. Perfetti, “Full characterization and optimization of a femtosecond ultraviolet laser source for time and angle-resolved photoemission on solid surfaces,” Rev. Sci. Instrum.83(4), 043109 (2012).
[CrossRef] [PubMed]

Michalski, E.

M. Ghotbi, Z. Sun, A. Majchrowski, E. Michalski, I. V. Kityk, and M. Ebrahim-Zadeh, “Efficient third harmonic generation of microjoule picosecond pulses at 355 nm in BiBO,” Appl. Phys. Lett.89(17), 173124 (2006).
[CrossRef]

Mochiku, T.

K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, and S. Shin, “Doping-dependence of nodal quasiparticle properties in high-Tc cuprates studied by laser-excited angle-resolved photoemission spectroscopy,” Phys. Rev. B77(6), 064522 (2008).
[CrossRef]

Morozov, I. V.

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

Murnane, M. M.

J. D. Koralek, J. F. Douglas, N. C. Plumb, Z. Sun, A. V. Fedorov, M. M. Murnane, H. C. Kapteyn, S. T. Cundiff, Y. Aiura, K. Oka, H. Eisaki, and D. S. Dessau, “Laser Based Angle-Resolved Photoemission, the Sudden Approximation, and Quasiparticle-Like Spectral Peaks in Bi2Sr2CaCu2O8+δ,” Phys. Rev. Lett.96(1), 017005 (2006).
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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]

Wernet, P.

P. Wernet, J. Gaudin, K. Godehusen, O. Schwarzkopf, and W. Eberhardt, “Femtosecond time-resolved photoelectron spectroscopy with a vacuum-ultraviolet photon source based on laser high-order harmonic generation,” Rev. Sci. Instrum.82(6), 063114 (2011).
[CrossRef] [PubMed]

Wetli, E.

T. Greber, O. Raetzo, T. J. Kreutz, P. Schwaller, W. Deichmann, E. Wetli, and J. Osterwalder, “A photoelectron spectrometer for k-space mapping above the Fermi level,” Rev. Sci. Instrum.68(12), 4549–4554 (1997).
[CrossRef]

Xu, Z.

Yan, W.

J. Faure, J. Mauchain, E. Papalazarou, W. Yan, J. Pinon, M. Marsi, and L. Perfetti, “Full characterization and optimization of a femtosecond ultraviolet laser source for time and angle-resolved photoemission on solid surfaces,” Rev. Sci. Instrum.83(4), 043109 (2012).
[CrossRef] [PubMed]

Yaresko, A. N.

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

Ye, J.

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[CrossRef] [PubMed]

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]

Yost, D. C.

A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
[CrossRef] [PubMed]

Zabolotnyy, V. B.

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

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]

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W. J. Kozlovsky, C. D. Nabors, and R. L. Byer, “Efficient second harmonic generation of a diode-laser-pumped CW Nd:YAG laser using monolithic MgO:LiNbO3 external resonant cavities,” IEEE J. Quantum Electron.24(6), 913–919 (1988).
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Nature (2)

A. Cingöz, D. C. Yost, T. K. Allison, A. Ruehl, M. E. Fermann, I. Hartl, and J. Ye, “Direct frequency comb spectroscopy in the extreme ultraviolet,” Nature482(7383), 68–71 (2012).
[CrossRef] [PubMed]

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[CrossRef]

Phys. Rev. Lett. (4)

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]

S. V. Borisenko, A. A. Kordyuk, V. B. Zabolotnyy, D. S. Inosov, D. Evtushinsky, B. Büchner, A. N. Yaresko, A. Varykhalov, R. Follath, W. Eberhardt, L. Patthey, and H. Berger, “Two Energy Gaps and Fermi-Surface “Arcs” in NbSe2.,” Phys. Rev. Lett.102(16), 166402 (2009).
[CrossRef] [PubMed]

S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky, T. K. Kim, I. V. Morozov, A. N. Yaresko, A. A. Kordyuk, G. Behr, A. Vasiliev, R. Follath, and B. Büchner, “Superconductivity without nesting in LiFeAs,” Phys. Rev. Lett.105(6), 067002 (2010).
[CrossRef] [PubMed]

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T. Kiss, T. Shimojima, K. Ishizaka, A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, and S. Shin, “A versatile system for ultrahigh resolution, low temperature, and polarization dependent Laser-angle-resolved photoemission spectroscopy,” Rev. Sci. Instrum.79(2), 023106 (2008).
[CrossRef] [PubMed]

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[CrossRef] [PubMed]

J. Faure, J. Mauchain, E. Papalazarou, W. Yan, J. Pinon, M. Marsi, and L. Perfetti, “Full characterization and optimization of a femtosecond ultraviolet laser source for time and angle-resolved photoemission on solid surfaces,” Rev. Sci. Instrum.83(4), 043109 (2012).
[CrossRef] [PubMed]

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T. Greber, O. Raetzo, T. J. Kreutz, P. Schwaller, W. Deichmann, E. Wetli, and J. Osterwalder, “A photoelectron spectrometer for k-space mapping above the Fermi level,” Rev. Sci. Instrum.68(12), 4549–4554 (1997).
[CrossRef]

Science (1)

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Figures (4)

Fig. 1
Fig. 1

(a) Layout of the experimental setup. L1: f = −75; L2: f = 100; Cyl(y): f = 80; Cyl(x): f = 1000; B. P.: Brewster plate; W. P.: Wollaston prism; P. P.: Pellin–Broca prism; PD: photodetector; BPD: balanced photodetector. The fundamental pulse intensity was monitored through a weak transmitted beam from mirror M4 by a photodetector following a pair consisting of a long-pass filter and a colored glass filter to cut the second-harmonic light. (b) Schematic image of transverse mode matching of the laser output to our cavity.

Fig. 2
Fig. 2

(a) Circulating (intracavity) power inside the enhancement cavity as a function of input coupler reflectance. Circles (red) represent the measured values; solid curve represents the calculated result from Eq. (2). Right axis corresponds to the enhancement factor. (b) Obtained second harmonic power at 420 nm versus expected value, defined as the square of the circulating power (Pc) multiplied by the nonlinear conversion factor, γ SH =0.14 W 1 , from a single-pass conversion efficiency, with Eq. (3). The difference between the diagonal dashed line and the experimental results implies two-photon absorption at 420 nm in the BBO crystal. Solid line was obtained by fitting the experimental results with Eq. (4), which yields a coefficient of two-photon absorption at 420 nm of 5.5 ( ± 0.5) × 10−11 m/W.

Fig. 3
Fig. 3

(a) Schematic of the Fourier-transform spectrometer using a Michelson interferometer. DM: dichroic mirror with high reflectivity at 210 nm and high transmittance at 632 nm; BS: fused-silica beam splitter with a plane parallelism of less than 2 arcsec. Other mirrors are UV-enhanced aluminum (R = 93% at 210 nm). A stabilized helium–neon laser was used as a ruler for the relative delay; its frequency stability was ± 2 MHz in 8 h. The two-color beams were divided by a dichroic mirror and detected by amplified silicon photodetectors. A line filter placed before the photodetector transmitted only light with a wavelength of 632.8 ( ± 1) nm. The signals were sent to an oscilloscope having one MB of memory per channel. (b) Typical interferogram after phase retrieval. It is a mixture of the fourth harmonic light and the light of the He–Ne laser.

Fig. 4
Fig. 4

Spectrum of the fourth-harmonic light obtained by the Fourier-transform spectrometer. The resolution of this measurement is 8.6 × 109 Hz, as determined by the full width at half-maximum of the power spectrum of the He–Ne laser obtained at the same time. The linewidth of the fourth-harmonic light is 0.34 meV.

Tables (1)

Tables Icon

Table 1 Comparison of light sources for high-resolution ARPES

Equations (5)

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

t SH =1 γ SH P C .
P c P 1 = 1 r 1 ( 1 r 1 r 2 t SH ) 2 ,
P SH = γ SH P c 2 .
I trans. = 1 βd+1/ I 0 ,
I( θ )= 1 2 ( ( I max. + I min. )( I max. I min. )cosθ ),

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