双变形镜自适应光学系统全场补偿实验验证  

Experiment of full field compensation with two-deformable mirrors adaptive optics system

作　　者：余浩[1,2,3] 黄林海[1,2] 黄利新[4] 蔡冬梅[5] 饶长辉[1,2] 姜文汉[1,2] 

机构地区：[1]中国科学院光电技术研究所,四川成都610209 [2]中国科学院自适应光学重点实验室,四川成都610209 [3]国防科学技术大学光电科学与工程学院,湖南长沙410073 [4]四川大学物理科学与技术学院,四川成都610064 [5]太原理工大学应用物理系,山西太原030024

出　　处：《红外与激光工程》2011年第8期1542-1546,共5页Infrared and Laser Engineering

基　　金：国家863计划(60408005)

摘　　要：在双变形镜自适应光学系统中,需要主激光出射时与信标光的振幅分布一致、相位共轭。当主激光到达目标时,光波的分布与目标上发射的信标光光波分布相同,主激光的振幅和相位都得到了校正。根据双变形镜自适应光学技术的概念,设计了一套基于双变形镜的自适应光学系统,对比了双变形镜和传统单变形镜对波前的空间校正能力,在实验上验证了双变形镜全场校正能力。实验结果表明:通过对光束振幅和相位的全场补偿,能使光束的近场场强得到控制,同时远场焦斑更接近衍射极限分布。传统的单变形镜校正后远场的斯特列尔比为0.71,双变形镜自适应系统校正后远场的斯特列尔比提高到0.85。In two-deformable mirrors amplitude distribution and conjugated goal, the beam front of main laser is phase of the main laser have been adaptive optics system, the main phase as the beacon light. When same to that of the beacon light corrected. According to concept transmitting laser has the same the main laser incidences to the in the goal, the amplitude and of the two-deformable mirrors adaptive optics technology, a two-deformable mirrors adaptive optics system was designed. Wavefront corrections of two-deformable mirrors and a single deformable mirror were compared. The feasibility of two-deformable mirrors technology was validated by experiment. Experimental results show that the near-field intensity of laser beam is hold for full field compensation of amplitude and phase, and the focal spot distribution of the far-field is closer to diffraction limit. The Strehl ratio （SR） of far-field image increases from 0.71 to 0.85 using the two DMs AO system instead of conventional AO system.

关 键 词：全场补偿 自适应光学 双变形镜 振幅 相位 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]