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:
Feb. 05, 2002
Filed:
Jan. 06, 2000
Joseph M. Fukumoto, Rancho Palos Verdes, CA (US);
Raytheon Company, Lexington, MA (US);
Abstract
An arrangement ( ) for efficiently shifting energy received at a first wavelength and outputting the shifted energy at a second wavelength. The arrangement ( ) includes a laser ( ) and an optical parametric oscillator ( ) of unique design. The oscillator ( ) is constructed with a energy shifting crystal ( ) and first and second reflective elements ( ) and ( ) disposed on either side thereof. Light from the laser ( ) at a fundament frequency is shifted by the crystal and output at a second wavelength. The second wavelength is a primary emission and induces a secondary emission of energy in the crystal. A novel feature of the invention is a coating applied on the reflective elements ( and/or ) for minimizing the secondary emission. This constrains the energy to be output by the arrangement ( ) at the wavelength of the desired primary emission. In the alternative, the arrangement ( ) may be optimized to output one or more of the secondary emissions.