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针对色散型和静态干涉型成像光谱仪光谱分辨率固定、系统效能得不到充分发挥等问题,提出了一种光谱分辨率可调的静态双折射干涉成像光谱技术.该技术的创新点之一在于,仪器的光谱分辨能力可调,且调节范围较宽.对于不同的探测目标,利用这一技术,只获取有用的光谱数据,既能满足多目标、多任务光谱图像探测的需要,又可大幅减少对存储空间和通信带宽的占用,有效缩短数据处理时间,提高系统信噪比,从而使仪器总体性能达到最优.本文给出了新技术的具体实现方案及理论模型,对核心元件—-横向剪切量可调的新型双Wollaston平行平板分束器进行了光线追迹,给出了其横向剪切量的精确理论计算公式,深入分析了其分光及横向剪切量调节原理.在此基础上,研究了新技术的光谱分辨率调节特性,给出了其光谱调节范围,并对其光谱调节原理进行了实验验证.
Aiming at the problems that the spectral resolution of the dispersive and static interference type imaging spectrometer is fixed and the system performance is not fully exerted, a novel static birefringence interference imaging spectroscopy technique with adjustable spectral resolution is proposed , The instrument has the advantages of adjustable spectral resolution and wide adjustment range.Using this technique, only the useful spectral data can be obtained for different detection targets, which can meet the needs of multi-target and multitasking spectral image detection, Reduce the occupation of storage space and communication bandwidth, effectively shorten the data processing time and improve the signal to noise ratio of the system, so that the overall performance of the instrument can be optimized.This paper gives the concrete realization scheme and theoretical model of new technology, The new dual Wollaston parallel plate beamsplitter with lateral shear is traced by ray tracing, and the precise theoretical calculation formula of its transverse shear is given, and its principle of splitting and lateral shear adjustment is deeply analyzed. On the basis of this, the spectral resolution adjustment characteristics of the new technology are studied, the range of spectral adjustment is given, and the principle of spectral adjustment is experimentally verified.