Patent ID: 6573530
Filing Date: 2003-06-03
Classification: B82Y,G02F,H01S

Abstract:
A non-linear optical semiconductor device comprising:a. a stack of a plurality of layers of semiconducting material having at least one quantum well bounded on each of two sides by an energy barrier with respect to transport of a charge carrier between the at least one quantum well and adjoining material on each of two sides, the quantum well having at least two bound quantum states with respect to a trapped charge carrier; b. an optically active zone that emits light, the optically active zone including the at least one quantum well, the optically active zone characterized by an optical gain; c. a carrier injector for forward-injecting carriers of a first conductivity type into the at least one quantum well; and d. a second carrier injector for forward-injecting carriers of a second conductivity type into the optically active zone in such a way as to vary the optical gain of the optically active zone.