Distributed feedback semiconductor laser

Details Distributed feedback semiconductor laser Distributed feedback semiconductor laser

1983-02-08

1985-11-12

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 44, 372 96, H01S 319

Patent

active

045532397

ABSTRACT:
A distributed feedback semiconductor laser which has periodic corrugations on a light emitting layer or an adjoining layer in the direction of travel of light and performs laser oscillation by the injection of current into the light emitting layer. In accordance with the present invention, a semiconductor having an energy gap larger than that of light emitting layer is formed so as to be extended from a current injection region. The semiconductor is formed uniformly and sufficiently distributed in the current injection region.

REFERENCES:
patent: 4045749 (1977-08-01), Burnham et al.
patent: 4144503 (1979-03-01), Itoh et al.
patent: 4309667 (1982-01-01), DiForte et al.

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