强激光主镜膜厚不均匀性对偏振和光学图像的影响
EFFECTS OF MIRROR COATING THICKNESS NON-UNIFORMITIES ON POLARIZATION AND OPTICAL FIGURE PROPERTIES OF LASER AND BEACON LIGHT
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摘要: 本文讨论了在特定镀膜室的几何尺寸约束下,一定直径(0.8m)的主反射镜的膜层厚度分布。给出了金属增强型高反射膜系由于不均匀性对光束偏振态的影响;计算了1.06μm主激光和0.5893μm的信标光产生的相位畸变。通过修正设计得到符号相同的相位变化,从而使信标光达到预期目的。Abstract: This paper discusses mirror coating nonuniformities caused by geometrical constraints in the chamber used and their effects on polarization of light beams for enhanced metal coatings. Phase distortions of 1.06-μm laser beam and 0.5893-μ beacon beam have been calculated. Phase distortions with same signs have been abtained using a modified design.
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Key words:
- coating thickness nonuniformities /
- polarization /
- phase distortion
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