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:
Mar. 08, 2016
Filed:
Jul. 25, 2014
Raytheon Company, Waltham, MA (US);
Robert Stultz, Cypress, CA (US);
Brian Boland, Redondo Beach, CA (US);
RAYTHEON COMPANY, Waltham, MA (US);
Abstract
An optical parametric amplifier and methods for idler extraction therein. Certain examples provide a method of extracting the idler at intermediate points within the optical parametric amplifier chain to improve conversion efficiency and/or maintain high beam quality (high Strehl ratio), where the pump beam has non-uniform profile. In one example, optical parametric amplifier includes an amplifier chain having a plurality of gain stages, each gain stage including a non-linear optical crystal, the plurality of gain stages configured to receive a signal seed and a pump beam and to produce an idler and an amplified signal, the pump beam having a non-uniform spatial profile, and a plurality of idler extractors interspersed with the plurality of gain stages and configured to extract the idler from intermediate points within the amplifier chain. The idler extractors can include polarizers, beam displacer crystals, or dichroic mirrors, for example.