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Analysis of the lateral displacement and optical path difference in wide-field-of-view polarization interference imaging spectrometer |
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| Authors: | Lei Wu Chunmin Zhang |
| Affiliation: | a School of Science, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China b Optical Metrology Laboratory, Xi’an Institute of Applied Optics, Xi’an 710065, People’s Republic of China c Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710068, People’s Republic of China |
| Abstract: | The mechanism of beam splitting and principle of wide-field-of-view compensation of modified Savart polariscope in the wide-field-of-view polarization interference imaging spectrometer (WPIIS) are analyzed and discussed. Formulas for the lateral displacement and optical path difference (OPD) produced by the modified Savart polariscope are derived by ray-tracing method. The theoretical and practical guidance is thereby provided for the study, design, modulation, experiment and engineering of the polarization interference imaging spectrometers and other birefringent Fourier-transform spectrometers based on Savart polariscopes. |
| Keywords: | Polarization interference imaging spectrometer Savart polariscope Lateral displacement Optical path difference Ray-tracing |
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