Semiconductor laser device including columns of semiconductor la

Details Semiconductor laser device including columns of semiconductor la Semiconductor laser device including columns of semiconductor la

1995-09-07

1997-06-03

Bovernick, Rodney B.

Coherent light generators

Particular active media

Semiconductor

372 50, 257 88, H01S 318

Patent

active

056362358

ABSTRACT:
A semiconductor laser device includes unit semiconductor lasers having facets and having side surfaces, active layers disposed in the respective unit semiconductor lasers so that the ends of the active layers are exposed to the facets of the respective unit semiconductor lasers and having centers at the facets. Two adjacent columns respectively include unit semiconductor lasers in the same number which are laminated so that light is emitted from each of the unit semiconductor lasers in the same direction. The active layer in the facet of each unit semiconductor laser is located at a position closer to the adjacent column than the center of the facet of the unit semiconductor laser. Therefore, as compared with the prior art array type semiconductor laser device in which the central point of the active layer is located at the center of the facet, i.e., at the center between the side surfaces of the unit semiconductor laser, a region where the active layers are distributed, i.e., a light emitting region, is narrowed, whereby the collection of the emitted light using a lens is facilitated.

REFERENCES:
patent: 4916710 (1990-04-01), Hattori
patent: 5086431 (1992-02-01), Hardy, Jr. et al.
patent: 5373174 (1994-12-01), Yamamoto

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