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Long wavelength vertical cavity surface emitting laser with monolithically grown photodetector
Long wavelength vertical cavity surface emitting laser with monolithically grown photodetector
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机译:具有整体生长光电探测器的长波长垂直腔表面发射激光器
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摘要
A long wavelength vertical cavity surface emitting laser (VCSEL) with a monolithically-grown photodetector is provided. The photodetector is installed in a middle portion of or on a bottom surface of a lower distributed Bragg reflector of the long wavelength VCSEL. The photodetector is integrated with the long wavelength VCSEL. A substrate on which the long wavelength VCSEL and the photodetector are crystal-grown does not absorb a laser beam emitted from the long wavelength VCSEL. Thus, the laser beam heading toward the substrate is accurately detected, and the gain of the laser beam is effectively controlled.
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