Patent ID: 6396865
Filing Date: 2002-05-28
Classification: H01S

Abstract:
A vertical cavity surface-emitting semiconductor laser comprising:a semiconductor substrate and a multilayer structure on the substrate including a layer with an active region at which light emission occurs, upper and lower layers surrounding the active region layer, upper and lower faces, electrodes by which voltage can be applied across the multilayer structure and the substrate, a central core, an antiresonant reflecting waveguide ring surrounding the central core having a region formed to have an effective higher index than the central core, the waveguide ring providing antiresonant lateral waveguiding confinement of a fundamental mode lateral wavelength, an upper reflector above the active region layer and a lower reflector below the active region layer, the reflecting ring and the upper and lower reflectors positioned to act upon the light generated in the active region to produce lasing action and emission of light from at least one of the upper and lower faces of the semiconductor laser, and including means for confining the current from the electrodes to the central core.