Technique of adaptive laser beam shaping based on stochastic parallel gradient descent

Huizhen Yang; Yuran Liu; Xinyang Li; Xunyin Bi

doi:10.1117/12.830890

20 May 2009 Technique of adaptive laser beam shaping based on stochastic parallel gradient descent

Huizhen Yang, Yuran Liu, Xinyang Li, Xunyin Bi

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 72821W (2009) https://doi.org/10.1117/12.830890
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

An adaptive beam intensity shaping method based on the combination of a 61-element deformable mirror and stochastic parallel gradient descent algorithm is presented. This technique can adaptively adjust the voltages of 61 actuators on the deformable mirror to reduce the difference between target beam shape and actual beam shape. Numerical simulations results show that within the stroke range of the deformable mirror, the system can be well used to create Gaussian and super-Gaussian beam profiles on the focal plane that closely match the desired target parameters.

Citation Download Citation

Huizhen Yang, Yuran Liu, Xinyang Li, and Xunyin Bi "Technique of adaptive laser beam shaping based on stochastic parallel gradient descent", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72821W (20 May 2009); https://doi.org/10.1117/12.830890

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