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US 9,711,173 B2Granted
Apparatus and method for setting slider surface potential
AssigneeSeagate Technology LLC
InventorsDaniel W. Olson, Declan Macken, Timothy William Stoebe
Life of this patent
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Abstract
An apparatus includes a slider body of a disk drive. The slider body is electrically coupled to a plurality of end bond pads. A voltage applied to one more of the end bond pads sets a surface potential of the slider body.
Claims20
An apparatus, comprising:
- a laser;
- a slider configured for heat-assisted magnetic recording and comprising a slider body, the slider body comprising a plurality of bond pads and a conductive portion;
- and
- a laser power monitor comprising a first end coupled to a first bond pad and a second end coupled to a second bond pad, the laser power monitor configured to sense light generated by the laser in response to a differential voltage across the first and second bond pads, and the laser power monitor configured to set a surface potential of the conductive portion of the slider body in response to a common mode voltage applied to the first and second bond pads.
1 more element
An apparatus, comprising:
- a laser;
- a slider configured for heat-assisted magnetic recording and comprising a slider body, the slider body comprising a plurality of bond pads and a conductive portion;
- and
- a laser power monitor comprising a first end coupled to a first bond pad and a second end coupled to a second bond pad, the laser power monitor configured to sense light generated by the laser in a first mode and to set a surface potential of the conductive portion of the slider body in a second mode;
- wherein the first mode is activated in response to a first voltage state of the first and second bond pads, and the second mode is activated in response to a second voltage state of the first and second bond pads.
2 more elements
Dependencies are inferred from the claim text.