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为了克服传统成像光谱仪稳定性差,干涉条纹杂乱复杂等缺点,提出了一种基于可调横向剪切量萨伐尔(Savart)偏光镜的新型偏振干涉成像光谱仪。具体分析推导了光线入射角变化对这种新型的可调横向剪切量萨伐尔偏光镜的光程差、偏振度以及对系统干涉条纹的影响;简要论述了这种新型偏振干涉成像光谱仪的工作机理和运行方式,从原理上论证了它具有重量轻、体积小、抗震性好、适用范围广、分束光线平行均匀分布、干涉图样清晰、处理简便等诸多优点,为新型可调横向剪切量的偏振干涉成像光谱仪的设计、研制、调试和工程化提供理论依据和实践指导。
In order to overcome the shortcomings of traditional imaging spectrometer, such as poor stability and interference fringes, a new polarization interference imaging spectrometer based on adjustable transverse shear Savart polariscope is proposed. The influence of the variation of light incident angle on the optical path difference, degree of polarization and the interference fringes of the new adjustable transverse shear rate Schwartlzer polarizer is analyzed and analyzed. The new polarization interference imaging spectrometer Working mechanism and operating mode, it is demonstrated theoretically that it has the advantages of light weight, small volume, good shock resistance, wide range of application, parallel and even distribution of beam splitting light, clear interference pattern, easy handling and so on. It is a new adjustable lateral shear It provides the theoretical basis and practical guidance for the design, development, debugging and engineering of the cutoff polarization interference imaging spectrometer.