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Long-pulse, single-frequency 1064 nm laser and frequency doubling

  • Xiafei Xu (a1) (a2), Gang Xie (a1), Yanhua Lu (a1), Lei Zhang (a1) and Min Wan (a1)...

Abstract

An all-solid-state single-frequency 1064 nm laser with a $100~{\rm\mu}\text{s}$ pulse width, 500 Hz repetition rate and 700 mJ single pulse energy is designed using seed injection and a three-stage master oscillator power amplifier (MOPA) construction. Using this as a basis, research on long-pulse laser frequency doubling is carried out. By designing and optimizing the lithium triborate (LBO) crystal, the theoretically calculated maximum conversion efficiency ${\it\eta}_{\max }$ reaches 68% at $M^{2}=1$ , while ${\it\eta}_{\min }$ is 33% at $M^{2}=3$ . Generation of 212 mJ pulses of green light with a repetition rate as high as 500 Hz is obtained from a fundamental energy of 700 mJ. The experimental conversion efficiency reaches 31% and the power stability is better than $\pm 1\%$ .

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Copyright

The online version of this article is published within an Open Access environment subject to the conditions of the Creative Commons Attribution licence .

Corresponding author

Correspondence to: Y. Lu, Institute of Applied Electronics, China Academy of Engineering Physics, Mian Yang, Sichuan, China. Email: happyeleo@yahoo.com.cn

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Keywords

Long-pulse, single-frequency 1064 nm laser and frequency doubling

  • Xiafei Xu (a1) (a2), Gang Xie (a1), Yanhua Lu (a1), Lei Zhang (a1) and Min Wan (a1)...

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