Long wavelength vertical cavity surface emitting laser with...

Details Long wavelength vertical cavity surface emitting laser with... Long wavelength vertical cavity surface emitting laser with...

2008-01-29

2008-01-29

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S050124

Reexamination Certificate

active

07324574

ABSTRACT:
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.

REFERENCES:
patent: 5475701 (1995-12-01), Hibbs-Brenner
patent: 5892786 (1999-04-01), Lott
patent: 5943357 (1999-08-01), Lebby et al.
patent: 6023485 (2000-02-01), Claisse et al.
patent: 2003/0021322 (2003-01-01), Steinle et al.
patent: 2003/0103543 (2003-06-01), Moser et al.

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