Feedback mechanism for vertical cavity surface emitting lasers

Details Feedback mechanism for vertical cavity surface emitting lasers Feedback mechanism for vertical cavity surface emitting lasers

1992-05-20

1994-02-08

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

257 80, 372 92, H01S 319

Patent

active

052854663

ABSTRACT:
A vertical cavity surface emitting laser, VCSEL, and detector combination includes a plurality of VCSEL diodes (14, 16a) monolithically integrated on a substrate (12) A forwardly biased lasing VCSEL diode (14) emits light in a vertical axial direction (26) and in a horizontal lateral direction (44). A laterally adjacent detector VSCEL diode (16a), which is unbiased or is reverse biased, receives the lateral light from the lasing VCSEL diode (14) and generates detector output current, which provides feedback (50) control of the forward biasing circuit (24) for the lasing VCSEL diode (14). The combination also provides an electrical-optical-electrical transducer and isolator.

REFERENCES:
patent: 4947400 (1990-08-01), Dutta
patent: 5101246 (1992-03-01), Onodera
patent: 5132982 (1992-07-01), Chan et al.
patent: 5136603 (1992-08-01), Hasnain et al.
"Surface Emitting Semiconductor Lasers", Kenichi Iga et al, IEEE Journal of Quantum Electronics, vol. 24, No. 9, Sep. 1988, pp. 1845-1854.
"Monolithic Integration of Photodetector With Vertical Cavity Surface Emitting Laser", G. Hasnain et al, Electronics Letters, vol. 27, No. 18, Aug. 29, 1991, pp. 1630-1632.
"GaAs Vertical-Cavity Surface Emitting Lasers Fabricated by Reactive Ion Etching", Kent D. Choquette et al, IEEE Photonics Technology Letters vol. 3, No. 10, Oct. 1991, pp. 859-862.

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