摘要
介绍一种新的像差探测方法,该方法能够探测整个惯性约束聚变(ICF)光学系统的像差。驱动变形镜调制各种不同的像差加入ICF光学系统,从而导致远场的焦斑变化,此时将CCD放置到远场探测焦斑强度,同时采用哈特曼-夏克波前传感器在近场探测系统像差变化量。根据不同的系统像差变化量以及与其对应的远场强度,利用改进的相位反演算法可以计算出整个光学系统的像差。数值模拟表明,该方法可以测量并校正整个ICF系统的光学像差。
A new method to measure the aberrations of entire beam path is presented. An additional CCD in far-field for detecting focal spot is located. Different deformable mirror＇s surface shapes are generated which can bring additional aberrations to ICF optical system and create their corresponding focal spots. Then additional aberrations and different intensity signal of focal spots can be recorded simultaneously by Hartmann-Shack sensor and CCD respectively. An amendatory phase-retrieval method is introduced, which can reconstruct the aberrations of entire beam path from different pairs of additional aberrations and their corresponding focal spots intensity. The simulative results show that the adaptive optics system can correct the aberrations of entire beam path of ICF successfully based on this method.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2008年第1期91-95,共5页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
