Optimal design of high power Nd:YAG laser based on compensation of thermal lens effect
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1.
Laboratory Center, Guangzhou University, Guangzhou 510006, China;
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2.
State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, SUN Yat-sen University, Guangzhou 510275, China
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Received Date:
2014-04-02
Accepted Date:
2014-07-17
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Abstract
In order to obtain 1064nm laser with high power and high beam quality, a laser resonator was designed to solve thermal lens effect with a concave lens as compensation lens. The selection of the compensation lens was analyzed. A Nd:YAG laser with a compensation lens and a plano-plano cavity was verified in the experiment. High beam quality 55W 1064nm laser was obtained when the focal length of the concave lens was 250mm and the transmittance of the output mirror was 30%. This research is helpful to the design of laser resonators with high power and beam quality.
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