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 5/18 (2006.01)

Patent

CA 2521005

A two-dimensional photonic crystal surface-emitting laser having a photonic crystal in which a photonic crystal periodic structure is located in or near an active layer (first medium) which emits light when carriers are injected thereto. The photonic crystal periodic structure comprises a second medium with a refractive index different from that of the active layer scattered in two-dimensional periodic array. The photonic crystal periodic structure is of a square lattice structure or a triangular lattice structure which has translation symmetry but does not have rotation symmetry. Alternatively, the photonic crystal periodic structure is of a square lattice structure or a rectangular lattice structure which is classified into pl, pm, pg or cm according to the two-dimensional pattern classification method. It is the most desirable that the lattice structure is composed of triangular lattice points.

Dans un laser photonique cristallin émettant en surface en deux dimensions un corps à structure périodique cristalline photonique (21) comprend une couche active (un premier milieu) (12) qui émet une lumière par injection de porteuse ou un deuxième milieu disposé près de ce dernier et possédant un indice de réfraction différent, ménagé avec une période à deux dimensions. La structure de grille d'un cristal photonique (20) est un réseau tétragonal ou orthogonal et présente une symétrie par translation mais pas de symétrie par rotation. La structure de réseau d'un cristal photonique (20) est une grille orthogonale ou tétragonale et est soit p1, pm, pg ou cm en fonction du procédé de classification de motifs bidimensionnels. Si possible, la forme d'un point de grille est presque triangulaire.

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