@inproceedings{68360dd642b0431694fd2399430d893c,
title = "Full Stokes polarimetry using dual-frequency liquid crystals",
abstract = "In a dual-frequency liquid crystal (DFLC), when the frequency of the applied voltage is more than a critical value (fc), the dielectric anisotropy of the material changes from positive to negative. This causes the director to switch its orientation from parallel to the field (for f < fc), to perpendicular to it (f < fc). Hence DFLC can be used in modulating the light by switching the frequency of an externally applied voltage. We present in this work about application of DFLCs in full Stokes polarimetery. A polarization modulator has been worked out based on two DFLCs and two static retarders. The combination of DFLCs' switching and static retarders are chosen such that more or less equal weightage is given to all the Stokes parameters. Initial results on the optimization of position angles of the modulators are presented towards the goal of achieving polychromatic modulator in the wavelength range 600-900 nm.",
author = "K. Nagaraju and Phanindra, \{D. V.S.\} and \{Krishna Prasad\}, S. and \{Shankar Rao\}, \{D. S.\} and P. Sreekumar",
note = "Publisher Copyright: {\textcopyright} 2018 SPIE.; Ground-based and Airborne Instrumentation for Astronomy VII 2018 ; Conference date: 10-06-2018 Through 14-06-2018",
year = "2018",
doi = "10.1117/12.2312503",
language = "English",
isbn = "9781510619579",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Luc Simard and Luc Simard and Evans, \{Christopher J.\} and Hideki Takami",
booktitle = "Ground-based and Airborne Instrumentation for Astronomy VII",
address = "United States",
}