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

被引：0
作者：
F. Yang
Z. Wang
Y. Zhou
F. Li
J. Xu
Y. Xu
X. Cheng
Y. Lu
Y. Bo
Q. Peng
D. Cui
X. Zhang
X. Wang
Y. Zhu
Z. Xu
机构：
[1] Chinese Academy of Sciences,Laboratory of Optical Physics, Institute of Physics
[2] Chinese Academy of Sciences,Research Center for Laser Physics & Technique, Technical Institute of Physics and Chemistry
[3] Chinese Academy of Sciences,Beijing Center for Crystal R&D, Technical Institute of Physics and Chemistry
[4] Graduate School of the Chinese Academy of Sciences,undefined
来源：
Applied Physics B | 2009年 / 96卷
关键词：
42.65.Ky; 42.70.Mp; 42.55.Rz;
D O I：
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中图分类号：
学科分类号：
摘要：
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.
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页码：415 / 422
页数：7
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