Patent ID: 6167073
Filing Date: 2000-12-26
Classification: B82Y,H01S

Abstract:
A semiconductor light emitting source comprising:(a) a semiconductor structure including in a transverse direction a substrate, an active region, and optical confinement layers and cladding layers on each side of the active region to surround the active region;(b) the semiconductor structure including at least one core element at which light emission occurs and interelement regions laterally adjacent to the core element, the core element having a selected effective refractive index to the emitted light, the effective refractive index of the interelement regions being higher than the effective refractive index of the core element to provide effective antiguiding of light emitted in the core element; and(c) the optical confinement and cladding layers on opposite sides of the active region having different indexes of refraction to provide an optical waveguiding structure in the transverse direction in the core element which is asymmetrical and which favors lasing only in the fundamental transverse mode.