Michelle Labrecque,1 Jenna Campbell,1 Kevin McClune,1 Fedor Talantov,1 Elliot Burke,1 Daniel Renner,1 Milan Mashanovitch,1 Leif Johansson,1 Paul Leisher1
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Broad area diode lasers operate with high power and efficiency but suffer from poor beam quality. Diffraction-limited lasers with equivalent power offer a disruptive alternative for applications ranging from fiber laser pumping to automotive LIDAR. We report >9 W continuous output power with 50% EO from tapered diode lasers at 885 and 980 nm, and >3 W power with 25% EO at 1550 nm. We show for the first time that beam quality degradation with increasing injection is completely mitigated and maintain a slow-axis M^2 of 1.3 from threshold to rollover. These devices achieve an order-of-magnitude increase in brightness over commercially available high power diode lasers.
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Michelle Labrecque, Jenna Campbell, Kevin McClune, Fedor Talantov, Elliot Burke, Daniel Renner, Milan Mashanovitch, Leif Johansson, Paul Leisher, "High power diffraction-limited tapered diode lasers," Proc. SPIE PC12092, Laser Technology for Defense and Security XVII, PC1209206 (30 May 2022); https://doi.org/10.1117/12.2622976