Light emission device, light emission device driving method, and projector

Abstract

A light emission device includes: first and second clad layers sandwiching an active layer; a first electrode connected with the first clad layer; and second electrodes connected with the second clad layer, at least part of the active layer forms gain areas corresponding to the second electrodes, the gain areas extend from a first side to a second side of the active layer while inclined to a vertical of the first side, at least first and second gain areas form a set of gain areas and a plurality of sets are provided, the first and second gain areas in each set are disposed perpendicular to a direction extending from the first side to the second side, the second electrodes above the first gain areas are interconnected by a first common electrode, and the second electrodes above the second gain areas are interconnected by a second common electrode.

1 . A light emission device comprising:
 an active layer including a first gain area and a second gain area; and   an electrode disposed on the active layer;   wherein the first gain area and the second gain area extend from one side of the active layer at an angle relative to a normal of the one side in plan view, and   the first gain area and the second gain area alternately emit light by sending current to the electrode.   
     
     
         2 . The light emission device according to  claim 1 , wherein:
 the first gain area and the second gain area are disposed adjacent to one another.   
     
     
         3 . A projector comprising:
 the light emission device according to  claim 1 ;   a light modulation device which modulates light emitted from the light emission device according to image information; and   a projection device which projects an image formed by the light modulation device.   
     
     
         4 . The light emission device according to  claim 1 , wherein the first gain area and the second gain area are provided in pluralities and the first and second gain areas are alternately disposed in the active layer.