稳态大视场偏振干涉成像光谱仪的通量分析

Analysis of Throughput of the Static Large Field of View Polarization Interference Imaging Spectrometer

在简要论述稳态大视场偏振干涉成像光谱仪 (SLPIIS)的干涉成像原理的基础上 ,重点对稳态大视场偏振干涉成像光谱仪的通量进行了分析和计算 .在考虑透射比的情况下 ,推导了偏振器偏振化方向及二分之一波片的光轴取向偏离理想方向时通量随偏角的变化关系 ,给出了最大调制度情形下的通量数值 .这种稳态大视场偏振干涉成像光谱仪适用波长范围广 ,具有结构简单、超小型和大视场补偿功能 ,突出了高稳态、高通量的显著特点 ,特别适合航空、航天遥感及微弱信号探测 ,在军事。

On the basis of a brief description of the interference imaging principle of static large field of view polarization interference imaging spectrometer (SLPIIS), throughput of the SLPIIS is emphatically analyzed and calculated. The relation of throughput with deviation is deduced under the polarized direction of polarizer and the direction of half wave plate’s light axis deviating from ideal direction. Throughput value in the maximum modulation depth is given. The SLPIIS has wide range of wave length, simple structure, ultra compact and large field of view compensation function, high stationary, high throughput, and is suitable for remote sensing of aviation, space light and weak signal survey. Therefore it has broad prospects of application in military and civil.