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Optical Engineering

Method to measure spectra of both the magneto-optical Kerr and the Faraday effect
Author(s): Liang-Yao Chen; Shi-Ming Zhou; Yu-Xiang Zheng; Yin Cheng; Yu Wang; Yue-Mei Yang; You-Hua Qian; Chang-He Shang; Yin-Jun Wang
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Paper Abstract

Details of an integrated apparatus to measure spectra of both the magneto-optical Kerr and the Faraday effect by the use of a rotating analyzer are given. The absolute values of both the Kerr rotation angle ?k and the ellipticity ?k can be determined by means of an achromatic quarter-wavelength retarder. The system is simple and reliable, and fully controlled by a computer. The measured values of the Kerr and Faraday effects for one MnBi(Al) film sample and for one GaP crystal sample are given. Since the magnitude of the Faraday rotation signal is proportional to the sample thickness, one must be careful in determining the fundamental energy gap by use of the Faraday spectrum only. Employment of the Fourier-transform technique will enable the system to measure both the Kerr and the Faraday effect in a wider data range from onehundredth to a few hundred degrees.

Paper Details

Date Published: 1 November 1997
PDF: 5 pages
Opt. Eng. 36(11) doi: 10.1117/1.601557
Published in: Optical Engineering Volume 36, Issue 11
Show Author Affiliations
Liang-Yao Chen, Fudan Univ. (China)
Shi-Ming Zhou, Fudan Univ. (China)
Yu-Xiang Zheng, Fudan Univ. (China)
Yin Cheng, Fudan Univ. (China)
Yu Wang, Fudan Univ. (China)
Yue-Mei Yang, Fudan Univ. (China)
You-Hua Qian, Fudan Univ. (China)
Chang-He Shang, Physics Institute (China)
Yin-Jun Wang, Physics Institute (China)

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