  This paper reports an opto-electro-thermal analysis of VCSEL structures with
a surface-relief filter and different aperture diameters. 808-nm GaAs/AlGaAs
VCSELs with different aperture diameters and different surface-relief filter
diameters are studied and the LI curves, the optical spectra, and the
temperature peaks of the devices are obtained. Also, the impact of utilizing
different oxide apertures on the temperature peak is shown. The effect of the
surface-relief filter diameter on VCSEL's performance is also investigated and
the optimal filter diameter is obtained for maintaining single-mode operation
while producing as much output power as possible.
