Semiconductor laser device

Coherent light generators – Particular active media – Semiconductor

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372 96, H01S 319

Patent

active

049742337

ABSTRACT:
A semiconductor laser device comprises a semiconductor mesa portion formed above semiconductor substrate by a predetermined interval, an active region, formed between the mesa portion and semiconductor substrate and consisting of a semiconductor having a forbidden band width smaller than those of the mesa portion and semiconductor substrate, for contributing to light emission, a pair of buried portions formed at both sides in a widthwise direction of and in contact with the active region and consisting of a semiconductor having a forbidden band width larger than that of the active region, a total width of the buried portions and the active region being smaller than that of the mesa portion, thereby forming a gap at a side of each of the buried portions between the mesa portion and semiconductor substrate to electrically insulate the mesa portion and semiconductor substrate, and supporting portions formed integrally with the mesa portion so as to support the mesa portion with respect to the substrate in association with the active region and the buried portions.

REFERENCES:
patent: 4815087 (1989-03-01), Hayashi
patent: 4858241 (1989-08-01), Suzuki et al.

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