Patent ID: 8654802
Filing Date: 2014-02-18
Classification: H01S

Abstract:
1. A vertical-cavity surface-emitting laser array comprising: a substrate having an element forming area; a plurality of columnar structures formed in the element forming area on the substrate; and at least one metal wire formed adjacent to the plurality of columnar structures, wherein the at least one metal wire is provided separately from electrode wires of the plurality of columnar structures, wherein each columnar structure includes a lower semiconductor reflector of a first conductivity type, an upper semiconductor reflector of a second conductivity type, and an active region formed between the lower semiconductor reflector and the upper semiconductor reflector, wherein the columnar structure emits light in a direction perpendicular to the substrate, and wherein the at least one metal wire has a distortion applying segment that extends in the same direction relative to the plurality of columnar structures so as to apply distortion to the active region of each columnar structure such that lights emitted from all of the plurality of columnar structures are polarized in a same direction.