Article

Applied Physics B

, Volume 96, Issue 2, pp 415-422

Theoretical and experimental investigations of nanosecond 177.3 nm deep-ultraviolet light by second harmonic generation in KBBF

  • F. YangAffiliated withLaboratory of Optical Physics, Institute of Physics, Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences Email author 
  • , Z. WangAffiliated withResearch Center for Laser Physics & Technique, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
  • , Y. ZhouAffiliated withLaboratory of Optical Physics, Institute of Physics, Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences
  • , F. LiAffiliated withLaboratory of Optical Physics, Institute of Physics, Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences
  • , J. XuAffiliated withResearch Center for Laser Physics & Technique, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
  • , Y. XuAffiliated withLaboratory of Optical Physics, Institute of Physics, Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences
  • , X. ChengAffiliated withLaboratory of Optical Physics, Institute of Physics, Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences
  • , Y. LuAffiliated withLaboratory of Optical Physics, Institute of Physics, Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences
  • , Y. BoAffiliated withResearch Center for Laser Physics & Technique, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
    • , Q. PengAffiliated withResearch Center for Laser Physics & Technique, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
    • , D. CuiAffiliated withResearch Center for Laser Physics & Technique, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
    • , X. ZhangAffiliated withBeijing Center for Crystal R&D, Technical Institute of Physics and Chemistry, Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences
    • , X. WangAffiliated withBeijing Center for Crystal R&D, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
    • , Y. ZhuAffiliated withBeijing Center for Crystal R&D, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
    • , Z. XuAffiliated withLaboratory of Optical Physics, Institute of Physics, Chinese Academy of SciencesResearch Center for Laser Physics & Technique, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences

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Abstract

We have presented theoretical and experimental investigations of nanosecond (ns) deep-ultraviolet (DUV) 177.3 nm radiation by means of second harmonic generation (SHG) from a frequency-tripled Nd:YAG laser (355 nm, 49 ns and 10 kHz) in KBe2BO3F2 (KBBF) nonlinear crystal for the first time. A DUV KBBF-SHG numerical model, accounting for linear absorption, pump depletion, beam spatial birefringent walk-off and diffraction, is performed in the Gaussian approximation of spatial and temporal profiles. In the experiment, a maximum average output power of 14.1 mW at 177.3 nm was obtained. The dependence of 177.3 nm output power on the 355 nm pump power was simulated. The calculated results are in good agreement with the measured data. We used the model further to investigate the optical conversion efficiency, pulse width, beam spatial intensity profile and beam quality factor of the generated 177.3 nm light, in particular the effect of beam birefringent walk-off.

PACS

42.65.Ky 42.70.Mp 42.55.Rz