Patent ID: 9048623
Filing Date: 2015-06-02
Classification: B82Y,H01S

Abstract:
1. A photonic crystal laser, comprising: a) an active layer; b) a ring-shaped photonic crystal including a plate-shaped base body on one side of the active layer, and a ring-shaped area formed in the plate-shaped base body, the ring-shaped area being formed by a plurality of modified refractive index area rows periodically arranged in a circumferential direction of a ring such that rotation symmetry is present, each of the modified refractive index area rows having an effective permittivity asymmetrical with respect to a center line of the modified refractive index area row, and each modified refractive index area in the modified refractive index area rows are arranged in a straight line in a radial direction of the ring, the modified refractive index areas being formed of a single material and having a refractive index different from that of the base body, the ring-shaped photonic-crystal being formed without a central defect; c) a first electrode and a second electrode facing each other across the active layer and the ring-shaped photonic crystal; and d) a window provided in the second electrode, the window being capable of allowing passage of a laser light generated from the ring-shaped photonic crystal.