中国光学Issue(3)：411-420,10.DOI:10.3788/CO.20140703.0411
自适应光学随机并行梯度下降算法波前整形规律仿真
Simulation on the law of wave-front shaping with stochastic parallel gradient descent algorithm for adaptive optics
摘要
Abstract
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 ex-pression 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 consider-ing the nature of real-time and simplification of system .关键词
自适应光学波前整形/随机并行梯度下降算法/收敛速率/整形能力/整形效果Key words
wave-front shaping for adaptive optics/stochastic parallel gradient descent algorithm/convergence rate/shaping capability/shaping effect分类
信息技术与安全科学引用本文复制引用
王卫兵,王挺峰,郭劲..自适应光学随机并行梯度下降算法波前整形规律仿真[J].中国光学,2014,(3):411-420,10.基金项目
吉林省重大科技攻关专项资助项目 （）
