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US 9,437,229 B2Granted
Isolator element for heat-assisted magnetic recording
AssigneeSeagate Technology LLC
InventorKarim Tatah
Life of this patent
Estimating the term…
Abstract
An apparatus with a slider body, a laser diode, and an isolator element. The slider body has an optical pathway extending therealong. The laser diode is configured to emit light along the optical pathway. The isolator element is disposed in the optical pathway to reduce optical feedback along the optical pathway back to the laser diode. In some embodiments, the isolator element is disposed in the optical pathway between the laser diode and the slider body.
Claims18
An apparatus, comprising:
- a slider body having an optical pathway extending therealong;
- a laser diode configured to emit light along the optical pathway;
- and
- an isolator element disposed in the optical pathway to reduce optical feedback along the optical pathway back to the laser diode, the isolator element comprising a magneto-optical photonic crystal including a plurality of magneto-optical film layers and a plurality of photonic band gap film layers, wherein at least some of the plurality of magneto-optical film layers are separated from one another by one of the plurality of band gap film layers.
1 more element
An apparatus comprising:
- a system configured to facilitate heat assisted magnetic recording, comprising:
- a slider body;
- a laser diode mounted to the slider body;
- and
- an isolator element disposed in an optical pathway between the laser diode and the slider body to reduce optical feedback along the optical pathway back to the laser diode, the isolator element comprising a magneto-optical photonic crystal having characteristics of a seven reflector single cavity crystal according to the equation [M/N]x[M]y[N/M]x, where M=Bi2.97Er0.03Fe4Ga0.5Al0.5O12, N=Sm3Ga5O12, x=any integer, and y=any integer.
2 more elements
A method, comprising:
- providing an apparatus configured to facilitate heat assisted magnetic recording having a laser diode;
- and
- disposing an isolation element in an optical pathway of the apparatus to reduce optical feedback to the laser diode, the isolation element comprising a magneto-optical photonic crystal including a plurality of magneto-optical film layers and a plurality of photonic band gap film layers, wherein at least some of the plurality of magneto-optical film layers are separated from one another by one of the plurality of band gap film layers.
Dependencies are inferred from the claim text.