Reducing laser diode temperature swings in heat-assisted magnetic recording (HAMR) using a slider-mounted heat sink
AssigneeWestern Digital Technologies, Inc.
InventorsSukumar Rajauria, Xiaokun Chew
Life of this patent
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Abstract
A heat-assisted magnetic recording apparatus may include a slider body, a submount, a laser diode assembly, and a first heat sink. The laser diode assembly comprises a plurality of lateral surfaces and a waveguide-facing surface. The submount is attached to the slider body by a first connector material. A first lateral surface of the laser diode assembly is in contact with the submount, and a second lateral surface of the laser diode assembly is in contact with the first heat sink. The first heat sink is in contact with a second connector material, which is in contact with the slider body to provide a heat flow path from the laser diode assembly to the slider body.
Claims21
A heat-assisted magnetic recording (HAMR) apparatus for writing to a magnetic storage media, the HAMR apparatus comprising:
- a slider body;
- a submount;
- a laser diode assembly comprising a plurality of lateral surfaces and a waveguide-facing surface;
- and
- a first heat sink;
- wherein:
- the submount is attached to the slider body by a first connector material;
- a first lateral surface of the laser diode assembly is mounted to the submount;
- a second lateral surface of the laser diode assembly is in contact with a first lateral surface of the first heat sink;
- the first heat sink is in contact with a second connector material;
- and
- the second connector material is in contact with the slider body.
A method of directing heat away from a laser diode assembly of a heat-assisted magnetic recording (HAMR) device, the method comprising:
- providing a first heat path from the laser diode assembly, the first heat path directing heat from a first lateral surface of the laser diode assembly through a submount, through a first connector material, and to a slider body;
- and
- providing a second heat path from the laser diode assembly, the second heat path directing the heat from a second lateral surface of the laser diode assembly through a first heat sink, through a second connector material, and to the slider body.
A heat-assisted magnetic recording (HAMR) data storage device, comprising:
- means for attaching a laser diode assembly to a slider body;
- and
- means for providing a heat sinking path directly from the laser diode assembly to the slider body, wherein at least a portion of the heat sinking path is distinct from the means for attaching the laser diode assembly to the slider body, and wherein the means for providing the heat sinking path directly from the laser diode assembly to the slider body are in direct contact with the laser diode assembly.
Dependencies are inferred from the claim text.