Ridge waveguide-type semiconductor laser having a current recomb

Details Ridge waveguide-type semiconductor laser having a current recomb Ridge waveguide-type semiconductor laser having a current recomb

1988-12-15

1990-01-23

Sikes, William L.

Coherent light generators

Particular active media

Semiconductor

372 46, 357 17, H01S 319

Patent

active

048963283

ABSTRACT:
A ridge waveguide-type semiconductor laser comprises a current recombination layer which generates light, and an optical waveguide layer to which the light generated at the recombination layer is coupled. A belt-like projection is formed by etching at least a part of the optical waveguide layer in the direction of its thickness at both opposing side regions up to a central region in the direction of the width of the laser.

REFERENCES:
patent: 4084130 (1978-04-01), Holton
patent: 4142160 (1979-02-01), Tsukada et al.
patent: 4694460 (1987-09-01), Hayakawa et al.
patent: 4794611 (1988-12-01), Hara et al.
patent: 4796067 (1989-01-01), Shimizu et al.
patent: 4799229 (1989-01-01), Miyazawa et al.
patent: 4829534 (1989-05-01), Miyazawa et al.

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