RING AND STRIPE OXIDE-CONFINED VERTICAL-CAVITY SURFACE-EMITTING LASERS

Ring and stripe oxide-confined vertical-cavity surface-emitting lasers are studied. Interesting coupling effects are observed due to the non zero propagation velocity of the optical mode in the plane of the cavi ty. The stripe geometries appear interesting due to the very low thres hold and provide a convenient means for increasing the aperture size w hile maintaining uniform current pumping. The ring laser provides a me ans of obtaining well defined multiple spots in the far field. (C) 199 6 American Institute of Physics.