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5 March 2021 High-power DBR-free VECSELs emitting at 1178 nm for sodium guide star applications
Davide Priante, Mingyang Zhang, Alexander Albrecht, David Follman, Catherine Nguyen, Garrett Cole, Mansoor Sheik-Bahae
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Proceedings Volume 11704, Vertical-Cavity Surface-Emitting Lasers XXV; 117040G (2021) https://doi.org/10.1117/12.2578600
Event: SPIE OPTO, 2021, Online Only
Abstract
DBR-free VECSELs overcome long-standing limitations in standard devices and offer improved heat management, reduced growth complexity, larger material choice, and broader gain tunability. We present the latest advances in DBR-free VECSELs emitting at 1178 nm targeting sodium guide star applications. We compare barrier-pumping and in-well pumping schemes employing 808 nm and 1070 nm pump lasers, respectively. A maximum output power of >20 W is attained with the barrier-pumping configuration, while a ~52 % slope efficiency with single pass is obtained with the in-well pumping scheme. Linewidth narrowing of < 0.25 nm and frequency conversion to 589 nm is also presented.
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Davide Priante, Mingyang Zhang, Alexander Albrecht, David Follman, Catherine Nguyen, Garrett Cole, and Mansoor Sheik-Bahae "High-power DBR-free VECSELs emitting at 1178 nm for sodium guide star applications", Proc. SPIE 11704, Vertical-Cavity Surface-Emitting Lasers XXV, 117040G (5 March 2021); https://doi.org/10.1117/12.2578600
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KEYWORDS
Sodium guide stars
Semiconductor lasers
Semiconductors
Light emitting diodes
Resistance
Second-harmonic generation
Silicon carbide
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