激光推进应用中的波前重构仿真研究

分析了Hartmann传感器应用于激光推进中波前畸变测量的可行性,介绍了模式法波前重构原理。利用MATLAB7.0对小孔板进行了仿真。并根据几何光线追迹原理,对设定的畸变波前进行了重构。同时比较了选用不同Zernike模式数的波前重构结果以及选用不同采样率小孔板的波前重构结果。仿真结果表明:Hartmann传感器对推进应用中大口径光斑的波阵面测量是可行的。

The research of emulating wavefront reconstruction in laser propulsion

The feasibility of measuring wavefront aberration in laser propulsion, which use Hartmann wavefront sensor,is analyzed.Modal wavefront reconstruction algorithm is introduced.Using MATLAB7.0,the hole array is emulated.According to the principle of geometry beam transmission,the assumed wavefront is rebuilt.The rebuilt figures of choosing different ranks of Zernike polynomial are compared.Meanwhile,the rebuilt figures of choosing different sampling rate hole array are compared too.The result shows that Hartmann wavefront sensor is useable in measuring wavefront aberration of high-aperture beam in laser propulsion.