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:
Dec. 03, 2013
Filed:
Dec. 12, 2011
Xuhui Jin, San Jose, CA (US);
Tobias Maletzky, San Jose, CA (US);
Suping Song, Fremont, CA (US);
Dayu Zhou, Fremont, CA (US);
Joe Smyth, Aptos, CA (US);
Moris Dovek, San Jose, CA (US);
Xuhui Jin, San Jose, CA (US);
Tobias Maletzky, San Jose, CA (US);
Suping Song, Fremont, CA (US);
Dayu Zhou, Fremont, CA (US);
Joe Smyth, Aptos, CA (US);
Moris Dovek, San Jose, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited surface plasmons in a scalable planar plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The planar plasmon generator is formed as a multi-layered structure in which one planar layer supports a propagating surface plasmon mode that is excited by evanescent coupling to an optical mode in an adjacent waveguide. A peg, which can be a free-standing element or an integral projection from one of the layers, is positioned between the ABS end of the generator and the surface of the recording medium, confines and concentrates the near field of the plasmon mode immediately around and beneath it.