Two-dimensional photonic crystal laser

Abstract

A two-dimensional photonic crystal laser includes: an active layer; a two-dimensional photonic crystal layer provided on one face of the active layer, in which modified refractive index regions are periodically and two-dimensionally disposed in a base member of a plate shape, the modified refractive index regions having a refractive index different from the refractive index of the base member; and a first electrode and a second electrode provided so as to sandwich the active layer and the two-dimensional photonic crystal layer in a stacking direction; in which the first electrode has an opening, and at least a part of a projection of a circumscribed circle of the second electrode onto the first electrode is located in the opening, and at least a part of periphery of the opening of the first electrode protrudes into the projection.

Dependencies are inferred from the claim text.