对Zernike模式法重构19单元哈特曼测量波前的研究  

Research of Zernike modal wavefront reconstruction of 19-element Hartmann-Shack wavefront sensor

作　　者：杨华峰[1] 姜宗福[1] 

机构地区：[1]国防科学技术大学理学院,长沙410073

出　　处：《激光技术》2005年第5期484-487,共4页Laser Technology

摘　　要：通过对19单元哈特曼测量和模式法重构波前的过程进行数值模拟,研究了Zern ike模式法重构波前时耦合和混淆出现的原因、条件、程度和数学算法的表现。确定了在综合考虑最高可识别模式和计算稳定性同计算工具关系的情况下,选择最佳重构阶数的基本原则。同时对19单元哈特曼复原精度进行了评价,得出模式耦合是影响精度的主要因素,得到了模式法波前测量的适用条件,为利用哈特曼进行光束质量诊断提供了依据。The reason,the condition and the degree of modal coupling and aliasing in wavefront reconstruction are pointed by simulating the measure and Zernike modal wavefront reconstruction course of 19-element Hartmann-Shack wavefront sensor. Considering the maximum distinguished modal and stability of calculation, the principle of selecting optimal value of Zernike reconstruction is found. The analysis of the accuracy of reconstruction shows that modal coupling is main error for 19-element Hartmann-Shack sensor＇s wavefront reconstruction. The condition and the accuracy of the wavefront measured with 19-element Hartmann-Shack wavefront sensor is received.

关 键 词：自适应光学 哈特曼传感器 波前重构 Zernike模式法 模式耦合 模式混淆 

分 类 号：O437[机械工程—光学工程]