Monolithically integrated laser diode and power monitor

摘要

An apparatus includes a slider body, a write element, and a laser chip. The write element is disposed on the slider body and is configured to apply a magnetic field to write data on a portion of a heat-assisted magnetic recording media in response to an energizing current. The laser chip has a laser diode with an active region configured to produce light. The laser diode adapted to inject the light to the proximate the read/write element. The laser chip additionally has a photodetector The photodetector is adapted to monitor light from the laser diode. The photodetector shares a same active region as the laser diode and the laser diode and photodetector are integrated together on the same laser chip.

主权项

1. An apparatus comprising:
a body; a read/write element disposed on the body and configured to apply a magnetic field to write data on a portion of a heat-assisted magnetic recording media in response to an energizing current; and a laser chip comprising:
a laser diode having an active region configured to produce light, the laser diode adapted to inject the light proximate the read/write element; and a photodetector sharing an active region that is continuous with the active region of the laser diode, the photodetector adapted to monitor light from the laser diode, wherein the laser diode and photodetector are integrated together on the same laser chip.