Integrated semiconductor laser

Details Integrated semiconductor laser Integrated semiconductor laser

1991-10-01

1992-10-20

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 23, 372 46, H01S 319

Patent

active

051576805

ABSTRACT:
An integrated semiconductor laser including at least two active regions, each active region oscillating at a respective, different wavelength, the integrated semiconductor laser including a common semiconductor substrate of a first conductivity type; a semiconductor first cladding layer of the first conductivity type disposed on the substrate; at least two spaced apart active regions disposed on the first cladding layer within a common active layer, the active layer including at least one compound semiconductor quantum well layer sandwiched between compound semiconductor quantum barrier layers, the quantum barrier layers having a larger energy band gap than and including at least one more element than the quantum well layer, the at least one more element of the quantum barrier layers penetrating farther into the quantum well layer at the first active region than into the quantum well layer at the second active region; a second cladding layer disposed on each of the first and second active regions; and respective electrical contacts to the first and second active regions through the first and second cladding layers disposed on opposite sides of each of the first and second active regions.

REFERENCES:
patent: 4585491 (1986-04-01), Burnham et al.
patent: 5048040 (1991-09-01), Paoli
Furuya et al., "AlGaAs/GaAs Lateral . . . Disordering", Japanese Journal of Applied Physics, vol. 26, No. 2, Feb. 1987, pp. L134-L135.
Furuya et al., "Arsenic Pressure . . . Quantum Well", Japanese Journal of Applied Physics, vol. 26, No. 6, Jun. 1987, pp. L296-L298.
Fukuzawa et al., "GaAlAs Buried . . . Disordering", Applied Physics Letters 45 (1), Jul. 1984, pp. 1-3.
Meehan et al., "Stripe-Geometry . . . Disordering", Applied Physics Letters 46 (1), Jan. 1985, pp. 75-77.
Guido et al., "Effects of Dielectric . . . Heterostructures", Journal of Applied Physics 61 (4), Feb. 1987, pp. 1372-1379.

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