On wafer laser stability control for heat-assisted magnetic recording
An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer that directs energy resulting from plasmonic e...
Saved in:
Main Authors | , , , , , , |
---|---|
Format | Patent |
Language | English |
Published |
23.06.2020
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer that directs energy resulting from plasmonic excitation to a recording medium. A light detector is configured to detect an amount of light. At least one laser heater is disposed proximate the laser. A controller is configured to control current supplied to the at least one heater based on the detected amount of light. |
---|---|
Bibliography: | Application Number: US201816136389 |