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:
Sep. 14, 2010
Filed:
Mar. 31, 2008
Xiaoyuan Peng, Portland, OR (US);
Wensheng Ren, Beaverton, OR (US);
Xiaoyuan Peng, Portland, OR (US);
Wensheng Ren, Beaverton, OR (US);
Electro Scientific Industries, Inc., Portland, OR (US);
Abstract
Anisotropic crystals such as Nd:YVO, Nd:YLF, and Nd:GdVOhave become preferred gain materials for many laser applications. The anisotropic gain medium without ancillary compensation ensures there is no degradation of laser modes when passing through the gain medium. An optical power amplifier that incorporates an anisotropic gain medium achieves power scaling with multiple passes while also maintaining good mode matching between the laser and the pump during each pass. Preferred embodiments implement for multiple passes of a seed laser beam through an anisotropic gain medium with substantially zero angular beam displacement during each pass. The multi-pass system provides an economical, reliable method of achieving high TEMpower to meet the demands of micromachining, via drilling, and harmonic conversion applications.