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30  W single-frequency continuous-wave master oscillator power amplifier laser at 1342  nm.

Xu-Chao Liu,Feng-Feng Zhang,Zhi-Min Wang,Nan Zong,Yong Bo,Qin-Jun Peng,Zu-Yan Xu

APPLIED OPTICS（2020）

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Abstract
We present a power-scalable high-power single-frequency continuous-wave 1342 nm master oscillator power amplifier (MOPA) system that consists of a polarized single-frequency 1342 nm LD seed laser, a Raman fiber preamplifier, and a three-stage Nd:YVO4 power amplifier. The single-frequency output power of 30 W at 1342 nm is achieved with the beam quality factors M-2 = 1.26, and the power stability for 1 h is better than +/- 0.5%. (C) 2020 Optical Society of America
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Key words
High-Power Lasers,Laser Oscillation,Optical Modulators,Solid-State Lasers,Continuous Wave Operation
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