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. 29, 2015
Filed:
Dec. 20, 2013
Applicant:
Hgst Netherlands B.v., Amsterdam, NL;
Inventors:
Thomas William Clinton, Danville, CA (US);
Barry C. Stipe, San Jose, CA (US);
Juraj Topolancik, San Jose, CA (US);
Assignee:
HGST Netherlands B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 11/00 (2006.01); G11B 5/48 (2006.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/4866 (2013.01); G11B 2005/0021 (2013.01);
Abstract
The present invention generally relates to a HAMR head having not only a tapered core for the SSC, but additionally a secondary confinement material in the cladding surrounding the core taper. The secondary confinement material prevents diverging light from the laser diode from spreading so that the light is coupled into the core of the SSC. The secondary confinement material is a symmetric structure that surrounds the core of the SSC on all sides so that high conversion efficiency is achieved for short taper lengths.