Research on the Phase Aberration Correction with a Deformable Mirror Controlled by a Genetic Algorithm
In order to improve laser beam quality, a real number encoding genetic algorithm based on adaptive optics technology was presented. This algorithm was applied to control a 19-channel deformable mirror to correct phase aberration in laser beam. It is known that when traditional adaptive optics system is used to correct laser beam wave-front phase aberration, a precondition is to measure the phase aberration information in the laser beam. However, using genetic algorithms, there is no necessary to know the phase aberration information in the laser beam beforehand. The only parameter need to know is the Light intensity behind the pinhole on the focal plane. This parameter was used as the fitness function for the genetic algorithm. Simulation results show that the optimal shape of the 19-channel deformable mirror applied to correct the phase aberration can be ascertained. The peak light intensity was improved by a factor of 21, and the encircled energy strehl ratio was increased to 0.34 from 0.02 as the phase aberration was corrected with this technique.
P Yang S J Hu S Q Chen W Yang B Xu W H Jiang
Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China Graduate School Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China
国际会议
第四届仪器科学与技术国际会议( 4th International Symposium on Instrumentation and Science and Tcchnology)
哈尔滨
英文
1017-1024
2006-08-08（万方平台首次上网日期，不代表论文的发表时间）