中红外波段可调谐液晶法布里珀罗高光谱成像探测仪(英文)  

Tunable liquid crystal Fabry-Perot hyperspectral imaging detectors in mid-infrared

作　　者：付安邦 张怀东[1,2,3] 张新宇[1,2,3] 桑红石 季安[4] 谢长生 

机构地区：[1]多谱图像信息处理技术国防科技重点实验室,湖北武汉430074 [2]图像识别与人工智能研究所,湖北武汉430074 [3]武汉国家光电实验室,湖北武汉430074 [4]中国科学院半导体研究所,北京100083

出　　处：《红外与激光工程》2013年第7期1853-1857,共5页Infrared and Laser Engineering

基　　金：中国航天科技集团公司卫星应用研究院创新基金;supported by the Key Fund of Wuhan National Laboratory for Optoelectronics(No.0101187006);the National Natural Science Foundation of China(No.61176052 and 60777003);the Fundamental Research Funds for the Central Universities(No.2011TS154)

摘　　要：提出了一种新颖的方法来研究电控可调谐液晶法布里珀罗高光谱成像探测器，该设备将用于3-5μm波段范围内连续挑选特定波长，液晶指向失会受到加在设备电极两端的电压说产生的电场影响，基于这个理论，腔内的液晶折射率能够被电控。通过运用薄膜的矩阵传输公式，计算了感光面上的红外透过率，从而得到了透过率，外加点信号，以及挑选波长之间的关系。最重要的理论是设备将由两个法布里珀罗干涉仪紧密连接起来，分别受电控制，从而达到准确的在波段范围挑选单一波长的目的。This paper proposed a novel meth od for investigating the characteristics of an electricallytunable liquid crystal（LC） Fabry - Perot （FP） hyperspectral imaging detectors. The device would be used tosequentially choose the specific wavelength in the range of 3 to 5. Based on the method proposed thatthe directing vector of liquid crystal materials would be changed in an electric field applied over theelectrodes of the device, the refractive index of the FP cavity filled by LC film could be changedelectrically. Through the thin film matrix equation, we calculated the transmissivity of the infrared lightincident upon the photosensitive plane directly, and then obtained the relationship among thetransmissivity, the applied voltage signal,and the wavelength value selected. The most key features of theproposal approach was that the device will be composed of main very thin electrically refractive-indexparts, which are two FP interferometers connected closely so as to accurately perform the choice of eachsingle wavelength desired in the spectral range by the device developed.

关 键 词：法布里-珀罗干涉仪 液晶 单波长 

分 类 号：TN209[电子电信—物理电子学]