M. Alias, P. Leisher, K. Choquette, K. Anuar, D. Siriani, S. Mitani, Y. Mohd Razman, A.M. Abdul Fatah
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Efficiency and Spectral Characteristics of 850 nm Oxide-Confined Vertical-Cavity Surface-Emitting Lasers
In this work, a number of 850 nm vertical-cavity surface-emitting lasers (VCSELs) with varying oxide aperture sizes are fabricated and characterized to study the device efficiency and spectral characteristics. Differential quantum efficiencies up to 28% corresponding to wall-plug efficiencies of 15%, and multi-mode output spectrum rang of 845 nm to 850 nm were measured for a number of these devices. Additionally, the efficiency characteristics and spectral as a function of oxide aperture size for these 850 nm VCSELs are analyzed and explained.
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