Semiconductor laser device with an integrated light-detecting ar

Details Semiconductor laser device with an integrated light-detecting ar Semiconductor laser device with an integrated light-detecting ar

1987-06-30

1988-09-13

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

357 19, H01S 319

Patent

active

047714344

ABSTRACT:
A semiconductor laser apparatus comprising a laser-oscillating area and a light-detecting area, both of which are formed on a single substrate, wherein said laser-oscillating area and said light-detecting area have a common semiconductor layer with a first polarity disposed on said substrate and a common active layer disposed on said semiconductor layer, and said layer-oscillating area of said laser-oscillating area and/or said light-detecting area has a cladding layer with a second polarity disposed on said active layer, said laser-oscillating area and said light-detecting area being separated by a groove formed from the upper face of said cladding layer to the region below said active layer, and the active layer of said laser-oscillation area being flat while the active layer of said light-detecting area is sloped.

REFERENCES:
patent: 3948583 (1976-04-01), Tien
patent: 4297653 (1981-10-01), Scifres et al.
patent: 4470143 (1984-09-01), Kitamura et al.
patent: 4692207 (1987-09-01), Bouadma et al.
IBM Technical Disclosure Bulletin, vol. 27, No. 7B, Dec. 1984, pp. 4344, 4345, New York, U.S.; P. M. Mooney: "Photodiode Array for Monitoring Individual Lasers in a Laser Array".
Electronics Letters, vol. 18, No. 5, Mar. 1982, pp. 189, 190, London, GB; O. Wada et al.: "AlGaAs/GaAs Microcleaved Facet (MCF) Laser Monolithically Integrated with Photodiode".
Patents Abstracts of Japan, vol. 8, No. 256 (E-280) (1693), 22nd Nov. 1984; & JP-A-59 127 864 (Nippon Denki K.K.) 23-07-1984.
IEE Proceedings Section A a I, vol. 131, No. 5, part H, Oct. 1984, pp. 299-303, Old Woking, Surrey, GB; H. Matsueda et al.: "An Optoelectronic Integrated Device . . . ".
Applied Physics Letters, vol. 46, No. 3, Feb. 1985, pp. 226-228, American Institute of Physics, Woodbury, NY; T. Sanada et al.: "Monolithic Integration of a Low Threshold Current Quantum Well Laser and a Driver Circuit on a . . . "

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