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US 11,456,011 B2Granted
Heat-assisted magnetic recording device incorporating laser heater for improved laser stability
AssigneeSeagate Technology LLC
InventorsJames Gary Wessel, Roger L. Hipwell, Jr.
Life of this patent
Estimating the term…
Abstract
An apparatus comprises a slider configured to facilitate heat assisted magnetic recording and a submount affixed to the slider. A laser unit is affixed to the submount and comprises a laser operable in a non-lasing state and a lasing state. A heater is embedded in the laser unit or the submount. The heater is configured to generate preheat for heating the laser during the non-lasing state and to generate steering heat for heating the laser during the lasing state.
Claims18
An apparatus, comprising:
- a slider configured to facilitate heat assisted magnetic recording, the slider comprising;
- an optical waveguide communicatively coupled to a laser and a near-field transducer, and a heater at or proximate the laser, wherein the waveguide, laser, near-field transducer, and heater are disposed on a common wafer substrate;
- and
- the heater configured to generate preheat for heating the laser during the non-lasing state and generate steering heat for heating the laser during the lasing state.
1 more element
An apparatus, comprising:
- a slider configured to facilitate heat assisted magnetic recording, the slider comprising;
- an optical waveguide communicatively coupled to a laser and a near-field transducer, and a heater at or proximate the laser, wherein the waveguide, laser, near-field transducer, and heater are disposed on a common wafer substrate;
- and
- control circuitry coupled the laser and the heater, the control circuitry configured to cause the heater to generate preheat for heating the laser during a non-lasing state and cause the heater to generate steering heat for heating the laser during a lasing state.
1 more element
Dependencies are inferred from the claim text.