Rotating Analyzer Magneto-Optic Spectroscopy

Liang-Yao Chen; John A. WoolIam

doi:10.1117/12.962897

25 January 1990 Rotating Analyzer Magneto-Optic Spectroscopy

Liang-Yao Chen, John A. WoolIam

Proceedings Volume 1166, Polarization Considerations for Optical Systems II; (1990) https://doi.org/10.1117/12.962897
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

We describe a system for measuring magneto-optical spectra in the 1.5-6-eV photon energy range using a rotating analyzer technique. The measurements are done at a near normal incident angle of less than 2 degrees. A stepping motor with 400 steps per revolution is used to control the analyzer azimuthal angle. After Fourier transformation, the magneto-optical parameter of polar Kerr rotation angle, e is obtained. Magnetic field and spectral scanning, as well as data processing: are totally controlled by a microcomputer. The mechanical and electrical design, alignment, calibration, and error reduction techniques for this sytem are discussed in detail. Application of this system is illustrated for compositionally modulated amorphous (Dy/Co) multi-layer films.

Citation Download Citation

Liang-Yao Chen and John A. WoolIam "Rotating Analyzer Magneto-Optic Spectroscopy", Proc. SPIE 1166, Polarization Considerations for Optical Systems II, (25 January 1990); https://doi.org/10.1117/12.962897

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