Tilt angle dependence of the modulated interference effects in photo-elastic modulators

The effect of the PEM tilt angle and incident polarization on the PEM interference is studied for a single axis photo-elastic modulator. The dc, 1ω, and 2ω components of the detector signal vary periodically as a function of PEM tilt angle. Although it is possible to adjust the PEM tilt angle to min...

Full description

Bibliographic Details
Main Authors: Md. Abdul Ahad Talukder, Wilhelmus J. Geerts
Format: Article
Language:English
Published: AIP Publishing LLC 2017-05-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4975999
id doaj-990e1ba2197d408698bc9cc26dd714c3
record_format Article
spelling doaj-990e1ba2197d408698bc9cc26dd714c32020-11-25T00:57:52ZengAIP Publishing LLCAIP Advances2158-32262017-05-0175056719056719-410.1063/1.4975999218791ADVTilt angle dependence of the modulated interference effects in photo-elastic modulatorsMd. Abdul Ahad Talukder0Wilhelmus J. Geerts1Department of Physics, Texas State University, San Marcos, Texas 78666, USADepartment of Physics, Texas State University, San Marcos, Texas 78666, USAThe effect of the PEM tilt angle and incident polarization on the PEM interference is studied for a single axis photo-elastic modulator. The dc, 1ω, and 2ω components of the detector signal vary periodically as a function of PEM tilt angle. Although it is possible to adjust the PEM tilt angle to minimize the 1ω or 2ω detector signal at small tilt angles, it is not possible to null both of them simultaneously. For the case where no analyzer is used, the ac detector signals can be minimized simultaneously by adjusting the polarization angle of the light incident on the PEM and the PEM tilt angle. Direct observations of the detector signal indicate that the effects of refraction index and thickness variations are opposite consistent with a lower polarizability for compressive strain of the modulator.http://dx.doi.org/10.1063/1.4975999
collection DOAJ
language English
format Article
sources DOAJ
author Md. Abdul Ahad Talukder
Wilhelmus J. Geerts
spellingShingle Md. Abdul Ahad Talukder
Wilhelmus J. Geerts
Tilt angle dependence of the modulated interference effects in photo-elastic modulators
AIP Advances
author_facet Md. Abdul Ahad Talukder
Wilhelmus J. Geerts
author_sort Md. Abdul Ahad Talukder
title Tilt angle dependence of the modulated interference effects in photo-elastic modulators
title_short Tilt angle dependence of the modulated interference effects in photo-elastic modulators
title_full Tilt angle dependence of the modulated interference effects in photo-elastic modulators
title_fullStr Tilt angle dependence of the modulated interference effects in photo-elastic modulators
title_full_unstemmed Tilt angle dependence of the modulated interference effects in photo-elastic modulators
title_sort tilt angle dependence of the modulated interference effects in photo-elastic modulators
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2017-05-01
description The effect of the PEM tilt angle and incident polarization on the PEM interference is studied for a single axis photo-elastic modulator. The dc, 1ω, and 2ω components of the detector signal vary periodically as a function of PEM tilt angle. Although it is possible to adjust the PEM tilt angle to minimize the 1ω or 2ω detector signal at small tilt angles, it is not possible to null both of them simultaneously. For the case where no analyzer is used, the ac detector signals can be minimized simultaneously by adjusting the polarization angle of the light incident on the PEM and the PEM tilt angle. Direct observations of the detector signal indicate that the effects of refraction index and thickness variations are opposite consistent with a lower polarizability for compressive strain of the modulator.
url http://dx.doi.org/10.1063/1.4975999
work_keys_str_mv AT mdabdulahadtalukder tiltangledependenceofthemodulatedinterferenceeffectsinphotoelasticmodulators
AT wilhelmusjgeerts tiltangledependenceofthemodulatedinterferenceeffectsinphotoelasticmodulators
_version_ 1725222521110790144