Abstract

A single-mode deep-UV laser at 191.7 nm is demonstrated by seventh-harmonic generation of a single-mode 1342 nm $\text{Nd}\text{:}{\mathrm{YVO}}_4$ laser. The fundamental laser is an injection-locked, $Q$-switched ring laser at 10 kHz pulse repetition frequency. By cascaded second-harmonic and sum-frequency generation, an average power of 230 mW at 191.7 nm is achieved. At 185 mW, the setup features a Gaussian beam with a beam quality factor of $M^2<1.5$. A pulse duration of 9 ns with pulse energy fluctuations of $\sigma <3\%$ is obtained. The long-term spectral width is approximately 240 MHz full width at half-maximum, measured with a homemade scanning confocal Fabry–Perot interferometer. This work opens possibilities in fiber Bragg grating production, allowing the inscription of long gratings.

© 2016 Optical Society of America

All solid-state 191.7 nm deep-UV light source by seventh harmonic generation of an 888 nm pumped, Q-switched 1342 nm Nd:YVO₄ laser with excellent beam quality

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Opt. Express 22(11) 13648-13658 (2014)

High-power actively Q-switched single-mode 1342 nm Nd:YVO₄ ring laser, injection-locked by a cw single-frequency microchip laser

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Opt. Express 23(24) 31357-31366 (2015)

5.7  W cw single-frequency laser at 671  nm by single-pass second harmonic generation of a 17.2  W injection-locked 1342  nm Nd : YVO₄ ring laser using periodically poled MgO : LiNbO₃

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7.6  W 1342  nm passively mode-locked picosecond composite Nd:YVO₄/YVO₄ laser with a semiconductor saturable absorber mirror

Wei Tu, Ying Chen, Nan Zong, Ke Liu, Zhi-Min Wang, Feng-Feng Zhang, Shen-Jin Zhang, Feng Yang, Lei Yuan, Yong Bo, Qin-Jun Peng, Da-Fu Cui, and Zu-Yan Xu
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High peak power 4.7  ns electro-optic cavity dumped TEM₀₀ 1342-nm Nd:YVO₄ laser

Ke Liu, Ying Chen, Fangqin Li, Hongyan Xu, Nan Zong, Hongtao Yuan, Lei Yuan, Yong Bo, Qinjun Peng, Dafu Cui, and Zuyan Xu
Appl. Opt. 54(4) 717-720 (2015)