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US 9,959,893 B1Granted
Multi-purpose resistive sensor for a heat-assisted magnetic recording device
AssigneeSeagate Technology LLC
InventorsJohn Charles Duda, Zoran Jandric
Life of this patent
Estimating the term…
Abstract
An apparatus comprises a slider having an air bearing surface (ABS) and a near-field transducer (NFT) at or near the ABS. An optical waveguide is configured to couple light from a laser source to the NFT. A resistive sensor comprises an ABS section situated at or proximate the ABS and a distal section extending away from the ABS to a location at least lateral of or behind the NFT. The resistive sensor is configured to detect changes in output optical power of the laser source and contact between the slider and a magnetic recording medium.
Claims20
An apparatus, comprising:
- a slider comprising an air bearing surface (ABS);
- a near-field transducer (NFT) at or near the ABS;
- an optical waveguide configured to couple light from a laser source to the NFT;
- and
- a resistive sensor configured to detect changes in output optical power of the laser source and contact between the slider and a magnetic recording medium, at least a portion of the resistive sensor extending behind the NFT.
2 more elements
An apparatus, comprising:
- a slider comprising an air bearing surface (ABS);
- a near-field transducer (NFT) at or near the ABS, the NFT comprising a media facing surface, a non-media facing surface opposing the media facing surface, a first lateral surface, and a second lateral surface opposing the first lateral surface;
- an optical waveguide configured to couple light from a laser source to the NFT;
- and
- a resistive sensor configured to detect changes in output optical power of the laser source and contact between the slider and a magnetic recording medium, the resistive sensor comprising a first section biased toward the ABS and a second section extending behind the non-media facing surface of the NFT.
2 more elements
Dependencies are inferred from the claim text.