TY - CONF
TI - Numerical modeling of long wavelength vertical-cavity surface-emitting
semiconductor lasers. Part 2: Transient thermal modeling
AU - Tsigopoulos, A
AU - Paschos, V
PY - 1998
SP - 96-101
PB - SPIE - INT SOC OPTICAL ENGINEERING
T2 - SECOND GR-I INTERNATIONAL CONFERENCE ON NEW LASER TECHNOLOGIES AND
APPLICATIONS
TODO - 10.1117/12.316559
TODO - Vertical-Cavity Lasers; transient thermal modeling
TODO - 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.
ER -