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低偏振超宽光谱分色膜设计与制备

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  • 国家科技期刊平台
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可见/红外超宽光谱分色片是星载中分辨率光谱成像仪III 型光学系统中的重要光学薄膜器件.利用诱导透射原理,采用金属-介质膜系结构加非对称等效导纳匹配层,实现了45°入射时0.4～1.05 μm光谱高效透射,1.35～13 μm波段光谱高效反射,从而将入射光束分配到不同的光路.同时通过消偏振控制设计,获得了可见近红外波段低偏振灵敏度(LPS).所研制的分色片可见近红外波段平均透射率大于85%,LPS小于4%;短波及长波红外波段平均反射率大于90%.
Design and fabrication of an ultra-broadband dichroic beam-splitter with low polarization
This paper describes the design and fabrication of one kind of dichroic beam-splitter that operates in an ultra-broadband spectral range from visible to longwave infrared regions simultaneously.The use of metal-dielectric coatings makes it implement structures that transmit the visible/near infrared radiation from 0.4 to 1.05 μm and reflect infrared radiation from 1.36 to 13 μm.At the same time,the structures are designed to obtain a low linear polarization sensitivi-ty(LPS)in the visible/near infrared region.The transmission of visible/near infrared region is more than 85%and the average reflection of infrared region is more than 90%.The LPS of the region 0.4-1.05 μm is less than 4%.

optical coatingsultra-broadband dichroic beam-splitterinduced transmissionpolarization sensitivity

于天燕、秦杨、蒋林、段微波、刘定权

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上海市光学薄膜与光谱调控重点实验室,上海 200083

中国科学院上海技术物理研究所,上海 200083

光学薄膜 超宽光谱分色片 诱导透射 偏振灵敏度

2024

10.11972/j.issn.1001-9014.2024.03.015

红外与毫米波学报
中国光学学会 中国科学院上海技术物理所

红外与毫米波学报

CSTPCD北大核心
影响因子：0.612
ISSN：1001-9014
年,卷(期)：2024.43(3)
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