大口径束匀滑元件相位结构高精度测量方法  

High-precision measurement method of large diameter beam smoothing device's phase structure

作　　者：赵曦[1,2] 黄德权[1,2] 张超[1,2] 黄小霞[1,2] 高福华[1,2] 

机构地区：[1]四川大学物理科学与技术学院,成都610064 [2]高能量密度物理及技术教育部重点实验室,成都610064

出　　处：《四川大学学报（自然科学版）》2013年第2期317-320,共4页Journal of Sichuan University(Natural Science Edition)

摘　　要：为了满足惯性约束聚变对制作的大口径束匀滑元件误差检测的要求,针对现有的检测手段的不足,引入基于旋转差异的相位恢复技术,通过对旋转的相位板在不同位置时频谱面光强的测量,在迭代中对实际输入光场用圆形光阑进行修正,从而对待测元件进行高精度的恢复.仿真实验结果表明:检测结果精度较高,跟利用传统的GS相位恢复算法相比,在精度上提高了两个数量级.未来的研究将进一步着重于优化测量参数,在进一步的实验中提高此方法的可靠性和处理速度.In order to fulfil the demand of error check about large diameter beam smoothing device＇s phase structure which is used in inertial confinement fusion（ICF）,we introduce a phase retrieval technique based on rotation,which is by measurement of spectrum plate of different locations of rotation phase plate.In iterarion we use circular aperture to fix the actual input light field and precisely recover the phase plate outline.The simulation experiment result show that the check result has a high precision compared with the traditional GS algorithm,it has increased precision in two order of magnitude.Future research will further focus on optimizing the measurement parameters to improve the reliability and processing speed of this method in further experiments.

关 键 词：相位恢复 旋转位相 改进GS算法 误差检测 

分 类 号：O436[机械工程—光学工程]