摘要
可见+1.54μm激光/长波红外分色片分离可见光、激光和长波红外光,在多通道成像光学系统中起着重要的作用.分析了分色片基板和薄膜材料的选择,优化设计并用电子束蒸发法制备了该分色片,其反射率和透射率都达到了94%以上,已成功应用于实际光学系统.
Visible ＋ 1.54μm laser/longwave infrared dichroic beamsplitters, which separate the incident spectrum into visible light, laser and longwave infrared light, take an important role in multichannel imaging spectrum technique. The choice of substrates and coating materials was discussed. Then the coating design of reflecting the visible（400 - 800nm） and laser （1540nm） light while transmitting the longwave infrared （8 - 12μm） spectrum was analysed, and the beamsplitter was manufactured by e-gun evaporation. The measured reflectivity and transmittance of the corresponding channel are all above 94% and the dichroic beamsplitters has been used in practical optical system successfully.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第4期307-310,共4页
Journal of Infrared and Millimeter Waves
基金
国家自然科学基金(60778025)资助项目
关键词
光学薄膜
分色片
多通道成像技术
optical thin film
dichroic beamsplitter
multichannel imaging spectrum technique
