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Title: Impact of the Cotton–Mouton effect on Faraday polarimetry measurements using circular polarization

Here, a comprehensive understanding of the impact of Cotton-Mouton Effect on Faraday polarimetry measurements using counter-rotating circular polarization probe beams has been developed. By using Jones theory, analytic study shows the Cotton-Mouton Effect cancels to first order with coupling into the Faraday measurement only at higher order. Jones-based numerical study shows the coupling effect strongly depends on the Cotton-Mouton Effect, Faraday Effect and wavelength chosen for the measurement. For realistic DIII-D plasma conditions and far-infrared wavelength, numerical calculation suggests the measurement is dominated by Faraday Effect while coupling effect leads to small but finite correction. By statistical comparison between experimental measurement and Jones-based numerical calculation under various plasma parameters, the impact of Cotton-Mouton Effect has been verified. Proper treatment of the coupling effect is essential in data analysis under certain conditions for polarimetric measurement using circular polarization in present devices and beyond.
Authors:
ORCiD logo [1] ;  [1] ;  [1]
  1. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
Publication Date:
Grant/Contract Number:
FC02-04ER54698; FG03-01ER54615; 11605067
Type:
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 60; Journal Issue: 8; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Research Org:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org:
USDOE; National Natural Science Foundation of China (NNSFC)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1459769

Chen, J., Ding, W. X., and Brower, D. L.. Impact of the Cotton–Mouton effect on Faraday polarimetry measurements using circular polarization. United States: N. p., Web. doi:10.1088/1361-6587/aac708.
Chen, J., Ding, W. X., & Brower, D. L.. Impact of the Cotton–Mouton effect on Faraday polarimetry measurements using circular polarization. United States. doi:10.1088/1361-6587/aac708.
Chen, J., Ding, W. X., and Brower, D. L.. 2018. "Impact of the Cotton–Mouton effect on Faraday polarimetry measurements using circular polarization". United States. doi:10.1088/1361-6587/aac708.
@article{osti_1459769,
title = {Impact of the Cotton–Mouton effect on Faraday polarimetry measurements using circular polarization},
author = {Chen, J. and Ding, W. X. and Brower, D. L.},
abstractNote = {Here, a comprehensive understanding of the impact of Cotton-Mouton Effect on Faraday polarimetry measurements using counter-rotating circular polarization probe beams has been developed. By using Jones theory, analytic study shows the Cotton-Mouton Effect cancels to first order with coupling into the Faraday measurement only at higher order. Jones-based numerical study shows the coupling effect strongly depends on the Cotton-Mouton Effect, Faraday Effect and wavelength chosen for the measurement. For realistic DIII-D plasma conditions and far-infrared wavelength, numerical calculation suggests the measurement is dominated by Faraday Effect while coupling effect leads to small but finite correction. By statistical comparison between experimental measurement and Jones-based numerical calculation under various plasma parameters, the impact of Cotton-Mouton Effect has been verified. Proper treatment of the coupling effect is essential in data analysis under certain conditions for polarimetric measurement using circular polarization in present devices and beyond.},
doi = {10.1088/1361-6587/aac708},
journal = {Plasma Physics and Controlled Fusion},
number = 8,
volume = 60,
place = {United States},
year = {2018},
month = {6}
}