Magneto-optical spectroscopy by the polarization modulation method using a multi-channel spectrometer

Magneto-optical spectroscopy by the polarization modulation method using a multi-channel spectrometer

In the conventional magneto-optical (MO) spectrometer, MO spectra are measured for each wavelength using monochromatic light, resulting in a long measurement time of more than 1 h. To shorten the measurement time, we propose an MO spectrometer using a multi-channel spectrometer combined with the pol...

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Veröffentlicht in:Japanese Journal of Applied Physics 2020-04, Vol.59 (SE), p.SEEA02
Hauptverfasser: Wang, Shihao, Nishikawa, Masami, Ishibashi, Takayuki, Sato, Katsuaki
Format: Artikel
Sprache:eng
Schlagworte:
Bismuth
Circular polarization
Ellipticity
Faraday effect
Neodymium
Polarization modulation
Spectra
Spectrum analysis
Thin films
Time measurement
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container_issue SE
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creator Wang, Shihao
Nishikawa, Masami
Ishibashi, Takayuki
Sato, Katsuaki
description In the conventional magneto-optical (MO) spectrometer, MO spectra are measured for each wavelength using monochromatic light, resulting in a long measurement time of more than 1 h. To shorten the measurement time, we propose an MO spectrometer using a multi-channel spectrometer combined with the polarization modulation method, by which both Faraday rotation and Faraday ellipticity spectra can be simultaneously obtained in several minutes from three optical spectra measured with linearly, left- and right-circularly polarized lights. In this study, a measurement of Faraday rotation and Faraday ellipticity spectra of a bismuth-substituted neodymium iron garnet thin film was demonstrated.
doi_str_mv 10.7567/1347-4065/ab5545
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subjects Bismuth
Circular polarization
Ellipticity
Faraday effect
Neodymium
Polarization modulation
Spectra
Spectrum analysis
Thin films
Time measurement
title Magneto-optical spectroscopy by the polarization modulation method using a multi-channel spectrometer
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