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:
Apr. 02, 2019
Filed:
Aug. 25, 2017
Headway Technologies, Inc., Milpitas, CA (US);
Tobias Maletzky, San Jose, CA (US);
Matteo Staffaroni, San Ramon, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A TAMR (thermally assisted magnetic recording) write head uses weakly plasmonic materials to create plasmon near field energy. The replacement of highly plasmonic materials like Au with weakly plasmonic materials like Rh avoids the thermal deformations of softer metals like Au. To maintain the performance of the head, it includes pre-focusing structures that concentrate plasmon energy by the creation of surface plasmon polaritons which are converted to more narrowly confined plasmons by excitation by a tapered waveguide. A waveguide blocker at the distal end of the waveguide enhances the formation of surface plasmon polaritons at the interface between the blocker and the distal end of the waveguide. A pair of symmetrically disposed optical side shields are formed to either side of the pole tip and a weakly plasmonic optical field enhancer further strengthens the optical field.