A heterojunction phototransistor is placed within the lower mirror of an AlGaAs DBR QW VCSEL laser. By sampling a small fraction of the internal optical power, the phototransistor controls the laser's continuous wave output power which has an application in optical disc storage systems.
Deep red vertical cavity surface emitting lasers with monolithically integrated heterojunction phototransistors for output power control
1996-01-01
159100 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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