Abstract

An improved intracavity sensor based output power control for microcavity light emitting devices. An improved phototransistor transducer is both configured and physically disposed so that it passively transmits the spurious optical energy output of the microcavity light emitting device while simultaneously generating a light determined electrical signal of easily used large magnitude that is nearly free of error. The base-collector region of the transistor is disposed with a quantum well absorbing layer and produces a signal responsive to a selected emission wavelength. The configuration of the optical energy communicating transducer is arranged so that it is improved in sensitivity and especially in selectivity in generating the laser feedback signal.

Document Type

Patent

Status

Issued

Issue Date

4-6-1999

Patent Number

US 5892786 A [5,892,786]

CPC Classification

H01S5/0264

Application number

08/823410

Assignees

Government of the United States, as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US)

Filing Date

3-26-1997

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