No/VOL: 09/2022 Page no. 166
Authors: Robert Sarzała , Julita Poborska :
Title: Thermal Investigation of GaAs- Based 2D VCSEL Diode Arrays
Abstract: In this paper the results of thermal numerical analysis of 850 nm GaAs VCSEL arrays are presented. A single VCSEL emitter and two types of VCSEL arrays: infinite and semi-infinite, were modelled. Several oxide aperture diameters, several values of the distance between emitters and various heat source densities were considered. The models for 3-D heat spreading allowed us to determine the heat flow distribution and to obtain the upper and lower bounds for both thermal resistance of single emitters and thermal crosstalk in arrays.
Key words: GaAs VCSEL, diode laser arrays, thermal analysis, near IR.