VCSEL arrays for quasi-continuous-wave applications

James Foresi; Mial E. Warren; Matthew K. Block; Lei Yang; Kevin Toledo; Chris J. Helms; Gianluca Bacchin

doi:10.1117/12.2510715

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1 March 2019 VCSEL arrays for quasi-continuous-wave applications

James Foresi, Mial E. Warren, Matthew K. Block, Lei Yang, Kevin Toledo, Chris J. Helms, Gianluca Bacchin

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Proceedings Volume 10938, Vertical-Cavity Surface-Emitting Lasers XXIII; 109380D (2019) https://doi.org/10.1117/12.2510715
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

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.

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James Foresi, Mial E. Warren, Matthew K. Block, Lei Yang, Kevin Toledo, Chris J. Helms, and Gianluca Bacchin "VCSEL arrays for quasi-continuous-wave applications", Proc. SPIE 10938, Vertical-Cavity Surface-Emitting Lasers XXIII, 109380D (1 March 2019); https://doi.org/10.1117/12.2510715

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