Abstract

This paper reports the method of generating a 355 nm ultraviolet (UV) quasicontinuous pulse laser by using two periodically poled Mg-doped lithium niobate (PPMgLN) crystals in a single-pass cascade. In the first PPMgLN crystal with a length of 20 mm and a first-order-poled period of 6.97 µm, the second-harmonic light of a 532 nm laser with 780 mW is generated from the 1064 nm laser with an average power of 2 W; After that, in the second PPMgLN crystal with a length of 15 mm and a third-order-poled period of 5.30 µm, the 532 nm laser generated was combined with the 1064 nm laser remaining through the first PPMgLN crystal to obtain a 355 nm UV laser with a maximum output average power of 20 mW, a repetition rate of 40 kHz, a pulse width of 49 ns, and a peak power of 10 W. Compared with existing reports, we have higher peak power and single pulse energy, which is an important application of the PPMgLN crystal. This paper will provide an important case for the realization of a 355 nm UV quasicontinuous or a continuous laser.

© 2023 Optica Publishing Group

A 7.81 W 355 nm ultraviolet picosecond laser using La₂CaB₁₀O₁₉ as a nonlinear optical crystal

Ling Zhang, Kai Li, Degang Xu, Haijuan Yu, Guochun Zhang, Yuye Wang, Lirong Wang, Faxian Shan, Chao Yan, Yingying Yang, Baohua Wang, Nan Wang, Xuechun Lin, Yicheng Wu, and Jianquan Yao
Opt. Express 22(14) 17187-17192 (2014)

Effective third harmonic generation of 355 nm ultraviolet laser based on the borate-phosphate Ba₃(ZnB₅O₁₀)PO₄ crystal

Yunru Chen, Xianchao Zhu, Shihui Ma, Hongwei Yu, Hongping Wu, Zhanggui Hu, and Yicehng Wu
Opt. Mater. Express 13(11) 3164-3172 (2023)

High-power high-repetition-rate UV light at 355 nm generated by a diode-end-pumped passively Q-switched Nd:YAG laser

Fu-qiang Jia, Quan Zheng, Qing-hua Xue, Yi-kun Bu, and Long-sheng Qian
Appl. Opt. 46(15) 2975-2979 (2007)

High peak-power near-MW laser pulses by third harmonic generation at 355 nm in Ca₅(BO₃)₃F nonlinear single crystals

Florent Cassouret, Arvydas Kausas, Vincent Yahia, Gérard Aka, Pascal Loiseau, and Takunori Taira
Opt. Express 28(7) 10524-10530 (2020)

355nm laser generation based on Na₃La₉O₃(BO₃)₈ crystal

Jianxiu Zhang, Lirong Wang, Yin Li, Guiling Wang, Guochun Zhang, and Yicheng Wu
Opt. Express 20(15) 16490-16493 (2012)