一种可调横向剪切量的新型偏振干涉成像光谱仪

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。

Novel Polarization Interference Imaging Spectrometer with Adjustable Lateral Displacement Savart Polariscope

To avoid the problems of the classical interference imaging spectrometer,such as poor stabilization,and intractable interference fringes,a novel polarization interference imaging spectrometer based on a new adjustable lateral displacement Savart polariscope is developed.The effect of the incident angle on the optical path difference,state of polarization and interference fringes of the system is deduced in detail.The work principle and operation mode of this spectrometer are also analyzed,which proves that this interference imaging spectrometer has less weight,smaller capacity,better vibrational resistance,splitted beams with parallel and uniform distribution,and clear interference pattern,and can be widely used in many different fields.The theoretical and practical guidance is thereby provided for the study,design,and debugging or engineering of the new polarization interference imaging spectrometers with adjustable lateral displacement.