Semiconductor laser with integral light intensity detector

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Abstract
An integrated Si Schottky‐barrier detector for the output power stabilization of a GaAs/GaAlAs DH laser mounted on a Si heat sink is described. The signal emitted from the rear laser mirror and detected by the integral Schottky diode was used to stabilize the laser output power to within ∼1% over a 32 °C temperature range, thus eliminating the need for mounting fibers to or aligning bulky discrete detectors with the rear laser mirror.

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