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. 14, 2013
Filed:
Apr. 26, 2010
Applicant:
Michihiro Nakai, Chiba, JP;
Inventor:
Michihiro Nakai, Chiba, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/091 (2006.01);
U.S. Cl.
CPC ...
Abstract
[Object] An object of the invention is to provide a laser device having high optical amplification efficiency. [Solving Means] A laser deviceincludes: an optical fiberwhich includes a coreand a cladand through which seed light and pumping light propagate; and a glass rodwhich is doped with rare earth elements, has a diameter larger than that of the core, wherein the seed light and the pumping light output from the optical fiberare input to the glass rodto have increased diameters, and output light including at least the amplified seed light is output from the glass rod