Abstract

Stable single-mode emission of vertical-cavity surface-emitting lasers (VCSELs) is one of the imperative characteristics for application to optical computing and fiber communication. Several attempts have been reported to stabilize transverse mode emission for VCSEL.^1,2 In this work, transverse mode characteristics for an antiguided VCSEL structure using amorphous-GaAs (a-GaAs) clad with high refractive index have been investigated. For 10 μm-diameter device, we observed stable transverse mode emission, indicating the effective antiguiding of high order transverse mode in the a-GaAs clad. Using a finite difference beam propagation method, we studied the transverse field profiles of the antiguided stnicture and the effects of mirror loss at the transverse mode.

© 1996 IEEE