The design and optimization of two-dimensional VCSEL arrays operating with duty-cycles from 2 to 5% (quasicontinuous- wave or QCW) operating at 940 nm are presented. Designs for nominal 8 W and 100 W peak power using TriLumina’s flip-chip-bondable, back-side-emitting VCSELs are reviewed. Performance as a function of duty cycle, including peak power output, spectral width and beam divergence are presented. Performance from -40°C to 125°C, corresponding to automotive grade 1 requirements, is reviewed. Optimization of the VCSEL arrays as a function of the number of emitters per chip is analyzed for trends in wall-plug efficiency, slope efficiency and operating conditions.

Date Published: 1 March 2019
PDF: 10 pages
Proc. SPIE 10938, Vertical-Cavity Surface-Emitting Lasers XXIII, 109380D (1 March 2019); doi: 10.1117/12.2510715

Published in SPIE Proceedings Vol. 10938:
Vertical-Cavity Surface-Emitting Lasers XXIII
Kent D. Choquette; Luke A. Graham, Editor(s)