Two-dimensional photonic crystal laser

Abstract

A two-dimensional photonic crystal laser includes an active layer, a two-dimensional photonic crystal layer having a two-dimensional photonic crystal structure in which a different refractive index portion, which is a portion having a refractive index different from a refractive index of a plate-like base member laminated directly with the active layer or with another layer, is two-dimensionally and periodically disposed in the base member, the two-dimensional photonic crystal layer having a plurality of electric current injection regions having different resonance frequencies from each other, and an electric current supply unit (split electrode) configured to supply a signal electric current in which a ratio of electric current intensity between the plurality of electric current injection regions changes with time into each of the plurality of electric current injection regions.

Dependencies are inferred from the claim text.