Magneto-optical phase-modulating devices

Details Magneto-optical phase-modulating devices Magneto-optical phase-modulating devices

1978-10-02

1981-01-20

Sikes, William L.

Oscillators

Molecular or particle resonant type

331 945C, 350355, 356350, H01S 310

Patent

active

042465494

ABSTRACT:
The invention provides a magneto-optical phase-modulating device employing either the transverse Kerr magneto-optic effect or the Faraday magneto-optic effect and embodying a magneto-optic layer (1) of a ferromagnetic or ferrimagnetic garnet type material which gives rise to an improved performance over known devices. Examples of the garnet type material which may be employed are a bismuth doped garnet, praseodymium and a garnet type material of the group known as orthoferrite materials.
The invention finds particular application in laser gyroscopes.

REFERENCES:
patent: 3495189 (1970-02-01), LeCraw
patent: 3650601 (1972-03-01), Bierlein
patent: 3811096 (1974-05-01), Dillon, Jr. et al.
Hepner et al., "Magnetooptic Effects in Garnet Thin Film Wave-Guides"; Applied Optics, vol. 14, No. 7, pp. 1479-1481, Jul. 1975.

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