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分析了用哈特曼 夏克波前传感器研究高能激光器自由旋涡气动窗口对输出激光波前畸变的原理 ,并利用37单元哈特曼波前传感器实验研究自由旋涡气动窗口对输出激光波前的影响。结果表明 ,自由旋涡气动窗口对输出激光波前的影响主要是光束偏转和离焦 ,而其他低阶及高阶像差都比较小。由于透射激光束的偏转是稳定的 ,很容易由倾斜镜进行校正 ,因此稳定工作状态下的自由旋涡气动窗口能够满足实验需求。
The principle of the free-lapped pneumatics window of the high-energy laser on the output laser wavefront distortion is analyzed by using the Hartmann-Shack wavefront sensor. The effect of the free vortex aerodynamic window on the output laser wavefront is experimentally investigated by using the 37-unit Hartmann wavefront sensor. The results show that the influence of the free vortex aerodynamic window on the output laser wavefront is mainly the beam deflection and defocus, while the other low-order and high-order aberrations are relatively small. Since the deflection of the transmitted laser beam is stable and easily corrected by the tilt mirror, a free-vortex aerodynamic window in a steady state of operation can meet experimental requirements.