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:
Oct. 18, 2016
Filed:
Sep. 10, 2015
Hgst Netherlands B.v., Amsterdam, NL;
Stanley Burgos, Huntington Park, CA (US);
Barry C. Stipe, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A near field transducer (NFT) for heat assisted magnetic recording (HAMR) having a dual waveguide excitation system located adjacent to opposite sides of a plasmonic antenna. The light to one of the waveguides can be passed through a phase shifter so that its electric field is 180 degrees out of phase with that of the other waveguide. In this way, the energy from each of the waveguides can be delivered to the plasmonic antenna in an additive manner while heat-sinking schemes can be implemented in the orthogonal direction for greatly improving the optical efficiency and thermal stability of the NFT.