Numerical investigation of self-heating effects of oxide-confined vertical-cavity surface-emitting lasers
| Autor: | Karl Hess, Wei-Choon Ng, Kent D. Choquette, Yang Liu |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Phonon business.industry Physics::Optics Rate equation Condensed Matter Physics Laser Atomic and Molecular Physics and Optics Vertical-cavity surface-emitting laser law.invention Semiconductor laser theory Distributed Bragg reflector laser law Thermal Optoelectronics Electrical and Electronic Engineering business Quantum well |
| Zdroj: | IEEE Journal of Quantum Electronics. 41:15-25 |
| ISSN: | 0018-9197 |
| Popis: | We present a comprehensive numerical model to simulate self-heating effects of oxide-confined vertical-cavity surface-emitting lasers (VCSELs) under continuous-wave operation. The model self-consistently accounts for the close interaction between optical, electrical, and thermal processes in VCSELs. In particular, hot carriers and nonequilibrium optical phonons in the quantum wells are modeled by solving a carrier energy balance equation and an optical phonon rate equation. Our numerical simulations reveal that they are responsible for aggravated thermal rollovers in VCSELs' L-I characteristics. Detailed comparisons are made and good agreement is obtained between simulations and experiments for the L-I-V and lasing wavelength characteristics of VCSELs with varying oxide aperture size. Various mechanisms that result in the L-I thermal rollover behavior are also investigated with the aid of simulations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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