Control circuit for a stabilized laser

Details Control circuit for a stabilized laser Control circuit for a stabilized laser

1998-03-27

2000-04-11

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

372 31, H01S 310

Patent

active

06049073&

ABSTRACT:
A stabilized laser is comprised of a laser for generating radiation responsive to a control signal. A control circuit connected to the laser provides the control signal and an injection circuit injects a radio frequency into the control circuit and the control signal. A back facet photodiode sensor detects radiation emitted from a back faceted laser diode and provides a feedback signal to the control circuit for adjusting laser output power.

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"Effects of high frequency injection and optical feedback on semiconductor laser performance," by Edward C. Gage and Scott Beckens, SPIE, vol. 1316, Optical Data Storage (1990), pp. 199-204.
"Control of optical-feedback-induced laser intensity noise in optical data recording," by George R. Gray et al., Optical Engineering, Apr. 1993, vol. 32, No. 4, pp. 739-745.

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