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Title: Phase-shifting interferometry in fiber-based channeled spectropolarimetry
Channeled spectropolarimetry measures the spectral dependence of the polarization states of light. This technique is marked by its snapshot feature, in that the complete polarization states can be determined simultaneously from a single intensity spectrum. However, without athermalization, it suffers from high sensitivity to temperature, which in turn, degrades the polarimetric reconstruction accuracy. In this paper, we present a calibration technique for a fiber-based channeled spectropolarimetry that leverages phase-shifting interferometry to accurately demodulate the retarders' phase, thereby improving the accuracy of the acquired Stokes parameters. Additionally, it enables robust spectropolarimetric performance that is insensitive to environmental perturbations. Experimental results demonstrate that calibrations using phase-shifting interferometry improve the Stokes reconstruction results by approximately a factor of 3 when compared to the reference beam calibration method.  more » « less
Award ID(s):
1809753
PAR ID:
10180779
Author(s) / Creator(s):
;
Date Published:
Journal Name:
Polarization Science and Remote Sensing IX
Page Range / eLocation ID:
24
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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