The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 1980
Filed:
Feb. 23, 1978
Rodney D Henry, Anaheim, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A ring laser having a Faraday cell for biasing the mode locking region beyond the range of rotation rates of interest. The Faraday element included in the cell is a composite comprising a monocrystalline thin film of a ferrimagnetic material epitaxially deposited on a non-magnetic single crystal substrate. An antireflection coating on the composite reduces reflections. Reflections are further reduced by the selection of thickness and index of refraction for the layers of the composite. Selected substituents are used in garnet layers to achieve desired magnetic properties, desired indices of refraction, and desired matching of the lattice parameter from layer to layer to minimize internal stresses. Where a composite is provided with a reflection coating on one side thereof, it is adapted to serve as an optical cavity forming corner reflector.