Polarized Beam Splitting Effect In Heterogeneously Magnetized Magneto-Optic Films

Mark Waring

doi:10.1117/12.962256

5 February 1990 Polarized Beam Splitting Effect In Heterogeneously Magnetized Magneto-Optic Films

Mark Waring

Proceedings Volume 1151, Optical Information Processing Systems and Architectures; (1990) https://doi.org/10.1117/12.962256
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

Described here is a previously unreported optical characteristic of magneto-optic film which is in the "heterogeneous", or "third" stable magnetization state. In this largely disregarded state, such material displays a serpentine-like pattern of oppositely magnetized domains, whose individual size is on the order of ten microns in width. The optical effect is seen most clearly when a single large unpatterned magneto-optic device is struck at normal incidence by a linearly polarized laser beam. The magnetooptic film, when in this third state, splits the incident beam into an undeviated central beam whose angle and quality of polarization matches that of the input beam, as well as first and higher order diverging rings, whose angles of polarization lie at 90 degrees with respect to the input (and central output) beam's polarization. Experimental results are presented which detail the optical output. A mechanism for the effect is described, and applications of this "third" state output to binary Magneto-Optic Spatial Light Modulators are discussed.

Citation Download Citation

Mark Waring "Polarized Beam Splitting Effect In Heterogeneously Magnetized Magneto-Optic Films", Proc. SPIE 1151, Optical Information Processing Systems and Architectures, (5 February 1990); https://doi.org/10.1117/12.962256

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