Vcsel Arrays For Quasi-Continuous-Wave Applications
VERTICAL-CAVITY SURFACE-EMITTING LASERS XXIII(2019)
Abstract
The design and optimization of two-dimensional VCSEL arrays operating with duty-cycles from 2 to 5% (quasi-continuous-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 degrees C to 125 degrees 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.
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Key words
VCSEL, VCSEL array, Quasi-Continuous-Wave, Time-of-Flight
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