Orientation dependent wavefront correction system under grazing incidence.
Orientation dependent wavefront correction system under grazing incidence.
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DOI：
10.1364/oe.21.020497
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发表时间：
2013-09
期刊：
影响因子：
3.8
通讯作者：
Xingkun Ma;Lei Huang;M. Gong;Q. Xue;Zexin Feng;P. Yan;Qiang Liu
中科院分区：
文献类型：
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作者：
Xingkun Ma;Lei Huang;M. Gong;Q. Xue;Zexin Feng;P. Yan;Qiang Liu
利用掠入射光束的展宽效应，提出了一种新的波前校正方法。在不增加任何额外扩束元件的情况下，通过变形镜上两个沿着正交方向的掠反射，可以实现波前像差的满意校正。拉伸效应使光束沿着掠射方向扩展，随着驱动器数目的增加，光束的像差得到了很好的补偿。分析表明，该方法可将前30阶Zernike多项式的拟合系数控制在5%以内。
Making use of the stretching effect of grazing incident laser beam, a novel method of wavefront correction was promoted. Without adding any extra beam expanding components, aberrations of wavefront could achieve satisfying correction by two grazing reflections along orthogonal directions on the deformable mirrors. The stretching effect expanded the beam size along grazing direction and the orientation dependent varying aberrations were well compensated as more actuators took effect in the correction process. Analysis showed that the fitting coefficient of all the first 30 order Zernike polynomials could be controlled within 5% by this method.