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Proceedings Paper

Magneto-Optic Principles, Materials And Applications
Author(s): Di Chen
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Paper Abstract

Birefringence of circularly polarized light induced by the external magnetic field or internal magnetization in a material medium can be described phenomenologically by a skew symmetric permittivity tensor. The origin of this effect can be understood on the basis of magnetic field interacting on orbital electrons for the case of diamagnetic media, or the spin-orbit interaction for oriented spins in the case of ferromagnetic or low-temperature paramagnetic media. Faraday transmission and Kerr reflection effects are the dominant magneto-optic effects and are proportional to the field or magnetization contained in the off-diagonal term of the permittivity tensor, whereas the Voigt and Cotton-Mouton effects are second order effects and are usually difficult to observe. Using this permittivity tensor in the Max-well's equation, the detailed beam propaga-tion characteristics can be analyzed for arbitrary orientation between the magnetization or field, the polarization and the direction of beam propagation. Progress made in recent years in the preparation and refinement of magneto-optic media such as insulating magnetic materials, metallic films, glasses, and semiconductors has led to many new magneto-optic technologies and applications. These include laser mode control, optical mass memory, mode conversion in integrated optics, modulation and deflection, and tunable lasers. Both the magneto-optic materials and applications will be reviewed.

Paper Details

Date Published: 1 June 1973
PDF: 8 pages
Proc. SPIE 0038, Electro-Optics Principles and Applications, (1 June 1973); doi: 10.1117/12.953743
Show Author Affiliations
Di Chen, Honeywell Corporate Research Center (United States)

Published in SPIE Proceedings Vol. 0038:
Electro-Optics Principles and Applications
John B. DeVelis; Brian J. Thompson, Editor(s)

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