NDLI: Mueller-matrix polarimeter using analysis of the nonlinear voltage–retardance relationship for liquid-crystal variable retarders

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Bruce, N. C. López-téllez, J. M.
Abstract	A method for using liquid-crystal variable retarders (LCVRs) with continually varying voltage to measure the complete Mueller matrix of a general sample is presented. The LCVRs are usually employed with fixed retardance values due to the nonlinear voltage–retardance behavior that they show. For the measurement method presented here, the nonlinear voltage–retardance relationship is first measured, and then a linear fit of the known retardance terms to the detected signal is performed. For a gap of air, the measurement error in the Mueller-matrix polarimeter is estimated at 1%–10%, depending on the Mueller-matrix element. Also, we present experimental results for a Glan–Thompson prism polarizer as a test sample, and we use the measured Mueller parameters as functions of the orientation of the optical axes of the polarizer as an indication of the quality of the polarimeter. In addition, results are compared to a typical step-voltage method to measure the Mueller matrix. Both methods give good results.
ISSN	1559128X
Volume Number	53
Journal	Applied Optics
Issue Number	24
e-ISSN	21553165
Language	English
Publisher	Optical Society of America
Publisher Date	2014-10-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Optics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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