Patent ID: 6078602
Filing Date: 2000-06-20
Classification: B82Y,H01S

Abstract:
A semiconductor laser device comprising;a multiple quantum well active layer including well layers and barrier layers alternately;an n-type separate confinement heterostructure layer formed on a first surface of said multiple quantum well active layer, an energy gap of said n-type separate confinement heterostructure layer being larger than an energy gap of said barrier layers; anda p-type separate confinement heterostructure layer formed on a second surface of said multiple quantum well active layer, an energy gap of said p-type separate confinement heterostructure layer being not smaller than an energy gap of said barrier layers,said n-type separate confinement heterostructure layer and said p-type separate confinement heterostructure layer each having a respective thickness selected so that a transit time of electrons moving through the n-type separate confinement heterostructure layer is brought close to a transit time of holes moving through said p-type separate confinement heterostructure layer.