自由旋涡气动窗口自适应光学波前校正初步研究
Preliminary study on the compensation of the wavefront deformation inducedby freevortex aerodynamic window using AO system
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摘要: 自由旋涡气动窗口能有效地替代高能激光器传统晶体输出镜，起到密封激光器低腔压的作用。利用现有的37单元室内自适应光学系统，对自由旋涡气动窗口的输出激光波前畸变进行自适应光学波前校正。给出了自适应光学系统对气动窗口畸变波前的校正原理，采用直接斜率法在设计状态下对畸变波前进行了校正实验。结果表明，该自适应光学系统能够较好地校正工作在设计状态下的自由旋涡气动窗口对输出激光所引起的波前畸变。
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关键词:
- 高能激光器 /
- 自由旋涡气动窗口（FADW） /
- 自适应光学系统 /
- 哈特曼夏克波前传感器 /
- 波前畸变
Abstract: The freevortex aerodynamic window(FADW) can take the place of the conventional crystal output window sealing the lower pressure laser cavity of high energy lasers effectively. But the supersonic flow of the FADW will introduce some deformation to the output high power laser beam so it is necessary to compensate the disturbed laser beam using the adaptive optical system. This paper studies the compensation of the wavefront deformation of the FADW under the ideal designing situation using the 37 subapertures indoor adaptive optical system.It discusses the principle of the adaptive optical system and gives the experimental method and compensaton results. The results show that this 37 subapertures indoor adaptive optical system can compensate the wavefront deformation of the FADW under the des -
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