公开(公告)号：US09824705B1

公开(公告)日：2017-11-21

申请号：US15370975

申请日：2016-12-06

Applicant: Seagate Technology LLC

Inventor： Declan Macken ,  Jon Karsten Klarqvist

IPC: G11B5/02 ,  G11B11/00 ,  G11B5/48 ,  G11B7/1263 ,  G11B5/00

CPC classification number: G11B5/4853 ,  G11B5/4866 ,  G11B7/1263 ,  G11B2005/0021

Abstract: A slider of a heat-assisted recording head comprises electrical bond pads coupled to bias sources and a ground pad, an air bearing surface, and a waveguide configured to receive light from a laser source. A contact sensor proximate the air bearing surface is coupled between a first bond pad and a second bond pad. A bolometer is coupled to a reference thermal sensor. The bolometer is situated at a slider location that receives at least some of the light communicated along the waveguide. The reference thermal sensor is situated at a slider location unexposed to the light communicated along the waveguide. The bolometer and reference thermal sensor are coupled between the first and second bond pads and in parallel with the contact sensor. A ground connection is coupled to the ground pad and at a connection between the bolometer and the reference thermal sensor.