Distributed feedback semiconductor laser

Details Distributed feedback semiconductor laser Distributed feedback semiconductor laser

1982-10-27

1985-05-07

Davie, James W.

Coherent light generators

Particular resonant cavity

Distributed feedback

372 19, 372 45, H01S 3098

Patent

active

045162433

ABSTRACT:
A distributed feedback semiconductor laser which has, in an active layer or an adjoining layer, first corrugations causing periodic refractive index variations in the travelling direction of light and performs laser oscillation by the injection of a current into said active layer portion. In accordance with the present invention, second corrugations are formed to be aligned obliquely to said first corrugations, thereby causing additional loss to the TM mode to permit oscillation in the TE mode alone.

REFERENCES:
patent: 4257011 (1981-03-01), Nakamura et al.

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