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Primary Examiner: Corbin, John K.
Assistant Examiner: Rosenberger, R. A.
Attorney: Terry; Howard P.

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Title: Magnetic mirror for imparting non-reciprocal phase shift

Abstract: A magnetic mirror for imparting a non-reciprocal phase shift to p-polarized light incident thereon. A magneto-optic garnet layer is formed on a first surface of a transparent substrate having a second opposed substantially parallel surface upon which the light is incident. The light upon passing through the magneto-optic garnet layer is non-reciprocally phase shifted as a consequence of the application of a magnetic field to the garnet layer normal to the plane of incidence. Means are arranged adjacent a surface of the garnet layer for reflecting light passing therethrough back through the layer. As a magneto-optic material, monocrystalline bismuth lutetium iron garnet is particularly advantageous for use as the magneto-optic garnet layer.

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Inventors: Kestigian, Michael (Charlton Depot, MA, US)
McClure, Robert E. (Locust Valley, NY, US)
Vaher, Eo (Huntington Station, NY, US)

Application Number: 905832
Filing Date: 1978-05-15
Publication_date: 1980-04-01
Assignee: Sperry Corporation (New York, NY)
Primary Class(es): 359/484 356/469, 359/282, 359/324
Other Classes:
US Patent Ref:

3514766	May, 1970	Mee et al.	350/151.
3651504	Mar, 1972	Goldberg et al.	350/151.
3851973	Dec, 1974	Macek	356/350.
3927946	Dec, 1975	McClure	356/350.
3980949	Sep, 1976	Feldtkeller	350/151.

Other Refs: 7312423

Mar, 1975	NL.

Other References: Torok et al., "Magnetooptic Color Effects in Bismuth Garnet Domains": IEEE Transactions on Magnetics, vol. MAG-14, No. 1, Jan. 1978, pp. 31-32.
Levinstein et al., "Garnets for Bubble Domain Devices", Bell Lab Record, vol. 51, No. 7, Jul./Aug., 1973, pp. 209-214.