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:
Aug. 02, 1988
Filed:
Jul. 28, 1986
Pochi A Yeh, Thousand Oaks, CA (US);
Mark D Ewbank, Newbury Park, CA (US);
Mohsen Khoshnevisan, Newbury Park, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A coupled laser system includes a plurality of substantially parallel beams of coherent radiation with an output beam of coherent radiation at an oblique angle with respect to the plurality of beams. A photorefractive element is positioned to receive the plurality of beams and the output beams, the beams being frequency locked to within the photorefractive bandwidth of the photorefractive element such that laser energy is diffracted from the plurality of beams to the output beam by means of two-wave mixing. A lens may be used for focussing the parallel beams in the photorefractive element, while a plurality of mirrors may be supplied for adjusting the orientation of the output beam within the photorefractive element. Another coupled laser system includes a plurality of lasers, each laser providing a beam of coherent radiation, an optical resonant cavity, and a photorefractive element positioned within the resonant cavity, the beam being frequency locked to within the photorefractive bandwidth of the photorefractive element such that laser energy is diffracted from the coherent beams to a coupling beam in the resonant cavity by means of two-wave mixing. The resonant cavity is defined by a unidirectional ring resonator, with a partially reflecting mirror, a first substantially 100% reflecting mirror, and a second substantially 100% reflecting mirror.