title: Double-deformable-mirror adaptive optics system for laser beam cleanup using blind optimization.
abstract: An optimization-based correction method is developed to control simultaneously two deformable mirrors in a wavefront-sensor-less adaptive beam cleanup system, where the wave-front aberrations could not be compensated by a single deformable mirror. Stochastic parallel gradient decent algorithm is chosen as the optimization algorithm. In this control method, different aberrations are assigned to each deformable mirror according to their different correction quality. The method is proved to be effective by numerical simulations as well as experiments. Experimental results showed that the area containing 84% energy of the laser beam in the far-field can reach 3.0 times diffraction limited.
authors.affiliation: Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China. leixiangsonic@gmail.com
authors.forename: Xiang
authors.initials: X
authors.lastname: Lei
authors.forename: Shuai
authors.initials: S
authors.lastname: Wang
authors.forename: Hu
authors.initials: H
authors.lastname: Yan
authors.forename: Wenjin
authors.initials: W
authors.lastname: Liu
authors.forename: Lizhi
authors.initials: L
authors.lastname: Dong
authors.forename: Ping
authors.initials: P
authors.lastname: Yang
authors.forename: Bing
authors.initials: B
authors.lastname: Xu
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D007834:Lasers; D007909:Lenses; D008027:Light; D015233:Models, Statistical; D012542:Scattering, Radiation