The effects of optical medium including light beam splitter and reflecting metallic film on laser polarization state in a coherent CO_2 lidar are discussed.
讨论了红外相干激光雷达中光学介质对偏振光束的影响程度，包括光束分束片和反射镜片的影响，给出了定量的结果。
In our experiments, we use a half-intracavity laser. The discharge tube's window plate with high anti-reflecting film is used as a stress birefringence element.
采用半内腔式的激光器结构，激光增益管窗片的两表面镀有高增透膜并作为腔内应力双折射元件。
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