Open AccessPhase-shifting interferometry-based Fourier transform channeled spectropolarimeter
Author(s) -
Ali Altaqui,
Michael W. Kudenov
Publication year - 2019
Publication title -
applied optics
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 197
eISSN - 2155-3165
pISSN - 1559-128X
DOI - 10.1364/ao.58.001830
Subject(s) - interferometry , optics , polarimetry , stokes parameters , polarimeter , demodulation , fourier transform , polarization (electrochemistry) , physics , crosstalk , remote sensing , data acquisition , computer science , channel (broadcasting) , scattering , geology , computer network , chemistry , quantum mechanics , operating system
Channeled spectropolarimetry is a snapshot technique for measuring the spectral dependence of the state of polarization of light. However, it suffers from two major limitations, namely, its high sensitivity to environmental perturbations and its susceptibility to channel crosstalk. These limitations reduce the polarimetric reconstruction accuracy of the spectropolarimeter. A new calibration technique for channeled spectropolarimetry is presented that utilizes the concept of phase-shifting interferometry to accurately acquire and demodulate the retardation phase factors, thereby improving the accuracy of the Stokes data reconstruction as well as enabling more robust performance. The new technique also enables the acquisition of high-resolution intensity spectrum by adopting a dual-scan measurement technique for reducing crosstalk. Experimental results show that calibrations using phase-shifting interferometry yield higher data reconstruction accuracy as compared to the self-calibration technique.