An Iterative Model for the Steady-State Current Distribution in Oxide-Confined VCSELs
| Autor: | Jerome K. Butler, Gary A. Evans, Ralph H. Johnson, James R. Biard, Hsueh-hua Chuang, J.K. Guenter |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Steady state Iterative method business.industry Physics::Optics Condensed Matter Physics Distributed Bragg reflector Atomic and Molecular Physics and Optics law.invention Semiconductor laser theory Transverse mode law Optoelectronics Electrical and Electronic Engineering Resistor business Voltage drop Sheet resistance |
| Zdroj: | IEEE Journal of Quantum Electronics. 43:1028-1040 |
| ISSN: | 0018-9197 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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