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Updated: May 31, 2026
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
High-power 266 nm ultraviolet generation in yttrium aluminum borate
Qiang Liu1, Xingpeng Yan, Mali Gong
1State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China. qiangliu@mail.tsinghua.edu.cn
Abstract:
A yttrium aluminum borate [YAl(3)(BO(3))(4)] (YAB) crystal with UV cutoff wavelength of 165 nm is used as the nonlinear optical crystal for fourth harmonic generation. The fundamental frequency laser at 1064 nm from an Nd:YVO(4) master oscillator power amplifier laser was frequency doubled to 532 nm. Using the type I phase-matching YAB crystal, a 5.05 W average power 266 nm UV laser was obtained at the pulse repetition frequency of 65 kHz, corresponding to the conversion efficiency of 12.3% from 532 to 266 nm. The experimental results show great potential for the application of using YAB as a nonlinear optical crystal to get high-power fourth harmonic generation.
