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. 27, 2002
Filed:
Sep. 17, 1999
Peter Vitruk, Bothell, WA (US);
Other;
Abstract
A stable multi-fold telescopic resonator is applied to a slab laser to provide a high power laser beam of a high optical quality. The current invention could be applied to both waveguide and free-space slab lasers with either gas or solid-state active media. A reduced sensitivity to misalignment is achieved through the use of two short-radii concave folding mirrors forming a nearly-confocal or confocal optical resonator. In order to obtain a nearly-symmetrical output beam profile from the large thickness slab lasing medium, the resonator includes a slit diaphragm(s), positioned between the slab and resonator mirrors and aimed to eliminate higher order laser modes in the direction transverse to the plane of the slab. Furthermore, a three mirror multi-fold telescopic resonator is provided by substituting one of the resonator mirrors with a surface of one of the folding mirrors. Also, a four-mirror multi-fold telescopic resonator with the on-axis confocal or near-confocal folding mirror alignment is provided to cover a very large area slab lasing media.