Two-dimensional photonic crystal surface-emitting laser

Details Two-dimensional photonic crystal surface-emitting laser Two-dimensional photonic crystal surface-emitting laser

H - Electricity

01

S

H01S 5/183 (2006.01) H01S 5/10 (2006.01)

Patent

CA 2451565

Two-dimensional photonic crystal surface-emitting laser comprising a two-dimensional photonic crystal, having media different in refractive index arrayed in a two-dimensional cycle, disposed in the vicinity of an active layer that emits light by the injection of carriers, wherein the two-dimensional photonic crystal consists of square lattices having equal lattice constants in perpendicular directions, and a basic lattice consisting of a square with one medium as a vertex has an asymmetric refractive index distribution with respect to either one of the two diagonals of the basic lattice to thereby emit light in a constant polarizing direction.

L'invention concerne un laser à émission par la surface, cristallin et photonique, bidimensionnel, comprenant un cristal photonique bidimensionnel, présentant des supports différents au niveau de leur indice de réfraction, disposés en réseau à cycle bidimensionnel, à proximité d'une couche active émettant de la lumière par injection de porteurs, ledit cristal photonique bidimensionnel étant constitué de réseaux carrés présentant des intervalles de réseau égaux, dans des directions perpendiculaires, et un réseau de base constitué d'un carré comportant un support, en tant que vertex présentant une distribution d'indices de réfraction asymétrique, par rapport à l'une des deux diagonales du réseau de base, pour permettre d'émettre de la lumière dans une direction de polarisation constante.

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