Correction of the optical path difference on the tempo-spatially mixed modulated polarization imaging interference spectrometer

摘要

According to the technical requirements of the tempo-spatially mixed modulated polarization imaging interference spectrometer (TSMMPIIS), we designed and verified the maximum optical path difference (OPD) through two different schemes, and analyzed the influences of the field of view and calcite dispersion on the OPD. When the angles between the incident plane and the principal section of the Savart left plate were 0 degrees, 45 degrees and 90 degrees, we simulated the variations of the OPDs changing with different parameters. We found that the variations were proportional to the thickness t and the incident angle i. In order to reduce the influences of the Savart polariscope dispersion and field of view on the OPD, the corrected models were established, and the correctness was validated by the experiment. This work would provide theoretical and practical guidance for the design and engineering of the TSMMPIIS.