TWO-DIMENSIONAL PHOTONIC CRYSTAL SURFACE EMISSION LASER

摘要

PROBLEM TO BE SOLVED: To provide a two-dimensional photonic crystal surface emission laser which can emit light having a constant direction of polarization. SOLUTION: The two-dimensional photonic crystal surface emission laser 1 comprises a two-dimensional photonic crystal 10 where media having different refractive index are arranged, at a two-dimensional period, in the vicinity of an active layer 4 emitting light upon injection of carriers wherein the two-dimensional photonic crystal 10 comprises tetragonal lattices having a constant lattice interval (a) in the orthogonal direction and a basic lattice E1 of square having the vertex of one medium 12 has refractive index distribution asymmetric to any one of two diagonals C1 and C2 of the basic lattice E1.