Surface emitting laser device

Abstract

A surface emitting laser device can further improve the light emission efficiency thereof to enlarge the degree of freedom of the device. The surface emitting laser device includes an active layer 103 , a photonic crystal layer disposed to be adjacent to the active layer, an electrode 108 disposed on the photonic crystal layer, and a plurality of light emitting regions regulated by the electrode. The photonic crystal layer is configured to include a first photonic crystal region 104 disposed just under the electrode, and having a periodic refractive index structure for resonance of light within a plane, and a second photonic crystal region 105 disposed just under the light emitting region, and having a periodic refractive index structure for emitting light in a direction perpendicular to the plane.

1 . A surface emitting laser device comprising:
 an active layer;   a photonic crystal layer which has a two-dimensionally periodic refractive index structure, and disposed in adjacent to the active layer;   an electrode disposed on the photonic crystal layer; and   a light emitting region emitting light,   wherein the photonic crystal layer comprises
 a first photonic crystal region disposed under the electrode, and having a periodic refractive index structure for resonance of light within a plane, and 
 a second photonic crystal region disposed under the light emitting region, and having a periodic refractive index structure for emitting light in a direction perpendicular to the plane. 
   
     
     
         2 - 9 . (canceled)