高光束质量高斯非稳腔固体激光器研究

岱钦; 张善春; 杨帆; 宁日波; 李业秋; 乌日娜

doi:10.3788/CO.20191203.0559

Volume 12 Issue 3

Jun. 2019

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Article Contents

Chinese Optics > 2019 > 12(3): 559-566.

DAI Qin, ZHANG Shan-chun, YANG Fan, NING Ri-bo, LI Ye-qiu, WU Ri-na. Research on the high beam quality of Gaussian unstable resonators in solid state lasers[J]. Chinese Optics, 2019, 12(3): 559-566. doi: 10.3788/CO.20191203.0559

Citation:

DAI Qin, ZHANG Shan-chun, YANG Fan, NING Ri-bo, LI Ye-qiu, WU Ri-na. Research on the high beam quality of Gaussian unstable resonators in solid state lasers[J]. Chinese Optics, 2019, 12(3): 559-566. doi: 10.3788/CO.20191203.0559

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Research on the high beam quality of Gaussian unstable resonators in solid state lasers

doi: 10.3788/CO.20191203.0559

School of Science, Shenyang Ligong University, Shenyang 110159, China

Funds:

National Natural Science Foundation of China 61705145

Support Program for Innovative Talents in Liaoning Province LR2016079

Natural Science Foundation of Liaoning Province of China 201602649

Shenyang Science and Technology Plan Project 17-33-6-00

More Information

Corresponding author: DAI Qin, E-mail:daiqin2003@126.com
Received Date: 14 Jun 2018
Rev Recd Date: 31 Jul 2018
Publish Date: 01 Jun 2019

Abstract

Abstract

In order to obtain high beam quality pulsed solid laser output, the distribution mode of the Gaussian unstable resonator was studied. The boundary finite element method was used to transform the integral equation of the diffraction of the light field in the cavity into a matrix equation. According to a theoretical simulation, the effects of the aperture position, the size of aperture and the parameters of the Gaussian mirror on the amplitude of the output beam in a plane-convex Gaussian unstability cavity were analyzed. Based on the results of the theoretical simulation, the optical parameters of the laser were optimized. The distribution of amplitude and mode of output beam under different positions and aperture sizes were measured in this experiment. When the radius of the aperture was 1mm, the aperture was 150 mm from the Gaussian mirror, the pump voltage was 900 V, the values of M² in the x and y directions were respectively 1.9 and 2.3, and the maximum output energy of the laser was 280 mJ. The experimental results show that the addition of an aperture and the optimization of the parameters of the Gaussian mirror could improve the distribution of intracavity mode and produce high quality beam output, which agrees with the results of the theoretical simulation.
- unstable cavity,
- Gaussian mirror,
- distribution mode,
- boundary finite element method

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References(16)

References

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