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:
May. 07, 2002
Filed:
Apr. 17, 2001
Gerald T. Moore, Albuquerque, NM (US);
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
A specially cut uncoated birefringent crystal having three Brewster-cut faces with adjacent coated Brewster-cut coupling prisms for optical frequency conversion. Two IR input frequencies are used to obtain a third visible light frequency by sum-frequency generation. The uncoated birefringent crystal permits high power input beams. The two Z-polarized IR beams enter the lower portion of the Brewster cut IR input end of the crystal and pass out the Brewster cut lower portion of the output end, generating a Y-polarized visible light beam. The visible wavelength beam is reflected at the Brewster cut Z-polarized surface at the output end and again reflected at the upper output end surface cut perpendicular to the Brewster cut. The visible beam travels back toward the IR input end near the top surface of the crystal and exits through an upper Brewster cut surface cut for Y-polarized light. Input and output prisms with appropriate optical coatings are used to facilitate the process.