Title :
An Iterative Model for the Steady-State Current Distribution in Oxide-Confined VCSELs
Author :
Chuang, Hsueh-Hua ; Biard, James R. ; Guenter, Jim ; Johnson, Ralph ; Evans, Gary A. ; Butler, Jerome K.
Author_Institution :
Southern Methodist Univ., Allen
Abstract :
This paper presents an iterative model for the analysis of the current distribution in vertical-cavity surface-emitting lasers (VCSELs) using a SPICE-like approach. The model includes a degeneracy correction for operation at and above threshold. The effect of the resistance due to the p-distributed Bragg reflector (p-DBR) mirror layers and the oxide layer on performance is investigated. Higher sheet resistance under the oxide layer reduces the threshold current, but reduces the current range over which single transverse mode operation occurs. The voltage drop across the p-DBR region dominates spatial hole burning, which is moderated by lateral drift and diffusion. This simple iterative model is applied to commercially available oxide-confined VCSELs.
Keywords :
SPICE; current distribution; distributed Bragg reflectors; iterative methods; laser cavity resonators; laser mirrors; laser modes; optical hole burning; semiconductor device models; surface emitting lasers; SPICE; degeneracy correction; iterative model; oxide-confined VCSEL; p-DBR; p-distributed Bragg reflector mirror layer; spatial hole burning; steady-state current distribution; vertical-cavity surface-emitting laser; Current distribution; Iterative methods; Laser modes; Mirrors; Steady-state; Surface emitting lasers; Surface resistance; Threshold current; Vertical cavity surface emitting lasers; Voltage; Drift and diffusion; semiconductor lasers; spatial hole burning (SHB); surface-emitting laser;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2007.905005
