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:
Feb. 25, 2025
Filed:
Dec. 13, 2023
Seagate Technology Llc, Fremont, CA (US);
Mark Anthony Gubbins, Letterkenny, IE;
Christopher Neil Harvey, Springtown, GB;
Aidan Dominic Goggin, Redcastle, IE;
Fadi El Hallak, Londonderry, GB;
Reshma Anamari Mohandas, Londonderry, GB;
Bryn John Howells, Londonderry, GB;
Scott Eugene Olson, Eagan, MN (US);
Seagate Technology LLC, Fremont, CA (US);
Abstract
A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.