EFFECTS OF GRADING LAYERS ON GaAs VERTICAL CAVITY SURVACE EMITTING LASER PERFORMANCE

Abstract

This study is an attempt to investigate the effect of grading layers thicknesses and doping on the distributed Bragg reflectors (DBRs) resistivity by using advanced numerical simulation (ISETCAD) . Various VCSEL with and without grading DBRs aredesigned. It was observed increasing the length of grading minimize the voltage drop on the device, especially for p DBR. And total resistance of the device can be further lowered if all grading layers are all highly doped.

Keywords

VCSEL, DBR, GaAs, Dropping