Volume 7 Issue 3
Jun.  2014
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WANG Wei-bing, WANG Ting-feng, GUO Jin. Simulation on the law of wave-front shaping with stochastic parallel gradient descent algorithm for adaptive optics[J]. Chinese Optics, 2014, 7(3): 411-420. doi: 10.3788/CO.20140703.0411
Citation: WANG Wei-bing, WANG Ting-feng, GUO Jin. Simulation on the law of wave-front shaping with stochastic parallel gradient descent algorithm for adaptive optics[J]. Chinese Optics, 2014, 7(3): 411-420. doi: 10.3788/CO.20140703.0411

Simulation on the law of wave-front shaping with stochastic parallel gradient descent algorithm for adaptive optics

doi: 10.3788/CO.20140703.0411
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  • Author Bio:

    WANG Wei-bing(1986- ),male,Msc. He received his Msc degree in Changchun institute of optics,fine mechanics and physics,Chinese academy of sciences in 2013,and his research interests mainly focus on adaptive optics for wave-front shaping,control algorithm and electro-optical tracking control technology. E-mail:wangweibing10@126.com

  • Received Date: 16 Dec 2013
  • Rev Recd Date: 13 Feb 2014
  • Publish Date: 25 May 2014
  • Firstly, we introduce the principle of wave-front shaping with stochastic parallel gradient descent(SPGD) algorithm based on Zernike mode for adaptive optics in atmospheric turbulence, and achieve brief expression about Strehl ratio that makes convergence rate of SPGD algorithm be accelerated obviously. Then we construct wave-front shaping system with SPGD algorithm of specific parameters, and mainly make detailed simulations on the laws of convergence rate, shaping capability and shaping effect about distortion wave-front, Zernike order and actuator number of deformable mirror. The qualitative results show that three change laws are similar, and quantitative expressions of shaping capability and shaping effect are achieved by the least square method. And it can be found from discussion that it's better to select 37-unit deformable mirror to shape 3~27(25) order Zernike aberrations of distortion wave-front at the conditions of some shaping effect considering the nature of real-time and simplification of system.

     

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