High-power 266 nm ultraviolet generation in yttrium aluminum borate

Qiang Liu; Xingpeng Yan; Mali Gong; Hua Liu; Ge Zhang; Ning Ye

doi:10.1364/OL.36.002653

High-power 266 nm ultraviolet generation in yttrium aluminum borate

Opt Lett. 2011 Jul 15;36(14):2653-5. doi: 10.1364/OL.36.002653.

Authors

Qiang Liu¹, Xingpeng Yan, Mali Gong, Hua Liu, Ge Zhang, Ning Ye

Affiliation

¹ State 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

PMID: 21765498
DOI: 10.1364/OL.36.002653

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.