5 March 2018 High beam quality and high energy short-pulse laser with MOPA
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Proceedings Volume 10710, Young Scientists Forum 2017; 107103B (2018) https://doi.org/10.1117/12.2316797
Event: Young Scientists Forum 2017, 2017, Shanghai, China
Abstract
A high energy, high beam quality short-pulse diode-pumped Nd:YAG master oscillator power-amplifier (MOPA) laser with two amplifier stages is demonstrated. The two-rod birefringence compensation was used as beam quality controlling methods, which presents a short-pulse energy of 40 mJ with a beam quality value of M2 = 1.2 at a repetition rate of 400Hz. The MOPA system delivers a short-pulse energy of 712.5 mJ with a pulse width of 12.4 ns.The method of spherical aberration compensation is improved the beam quality, a M2 factor of 2.3 and an optical-to-optical efficiency of 27.7% is obtained at the maximum laser out power.The laser obtained 1.4J out energy with polarization integration.
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Quanwei Jin, Yu Pang, JianFeng Jiang, Liang Tan, Lingling Cui, Bin Wei, Yinhong Sun, Chun Tang, "High beam quality and high energy short-pulse laser with MOPA", Proc. SPIE 10710, Young Scientists Forum 2017, 107103B (5 March 2018); doi: 10.1117/12.2316797; https://doi.org/10.1117/12.2316797
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