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Numerical modeling of long wavelength vertical-cavity surface-emitting semiconductor lasers. Part 2: Transient thermal modeling

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Numerical modeling of long wavelength vertical-cavity surface-emitting semiconductor lasers. Part 2: Transient thermal modeling
Tsigopoulos, A Paschos, V
In this paper, a detailed analysis of the transient heat now in a VCSEL is carried out. The transient thermal response of VCSEL axisymmetric structures is calculated based on a Green’s functions method to solve the time-dependent thermal conduction equation. Based on this approach, the heat flow inside the device due to the dominant heat sources in the active and passive layers has been assessed. The influence of the current spreading and the material parameters on the transient thermal response is investigated, and the temporal evolution of the temperature distribution and the lasing wavelength shift are calculated and found to be in good agreement with results obtained by a finite elements method. Finally, the time constant of the active layer temperature rise due to a stepwise increase in current for a double-fused long wavelength VCSEL is calculated. (EN)
scientific_publication_inproceedings
Επιστημονική δημοσίευση - Ανακοίνωση Συνεδρίου (EL)
Scientific publication - Conference Paper (EN)
University of Athens
Pergamos Digital Library
Conference Paper
English
1998-01-01
uoadl:3050061
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3050061
SPIE - INT SOC OPTICAL ENGINEERING (EL)
SPIE - INT SOC OPTICAL ENGINEERING (EN)



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