High-efficiency 970-nm multimode pumps

Valentin Gapontsev; Igor Berishev; Glenn Ellis; Alexey Komissarov; Nikolay Moshegov; Oleg Raisky; Pavel Trubenko; Vladimir Ackermann; Eugene Shcherbakov; Jorg Steinecke; Alexander Ovtchinnikov

doi:10.1117/12.585907

17 March 2005 High-efficiency 970-nm multimode pumps

Valentin Gapontsev, Igor Berishev, Glenn Ellis, Alexey Komissarov, Nikolay Moshegov, Oleg Raisky, Pavel Trubenko, Vladimir Ackermann, Eugene Shcherbakov, Jorg Steinecke, Alexander Ovtchinnikov

Author Affiliations +

Proceedings Volume 5711, High-Power Diode Laser Technology and Applications III; (2005) https://doi.org/10.1117/12.585907
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

Abstract

Ultra-reliable very efficient multimode diodes have been developed. 90 micrometer wide aperture chip-on-submount demonstrate 67% peak power conversion efficiency at 25°C and 60% peak power efficiency at 85°C heatsink temperature; while record high thermal limited peak power in excess of 15 W CW is achieved at 15°C. State-of-the-art performance of Chip-on-Submount does not compromise its reliability; over 1,000,000 hours Mean Time Between Failures has been demonstrated. Cooler-less package design ensures thermal resistance of 4.5°C/W from the Chip-on-Submount to external heatsink; coupling efficiency of 95% into 0.15 NA at over 5 W power in 100 μm dia. fiber are routinely obtained. Results of multi-cell accelerated tests of packaged pumps yielded over 10 years of uninterrupted use MTBF at over 5W CW ex-fiber output.

Citation Download Citation

Valentin Gapontsev, Igor Berishev, Glenn Ellis, Alexey Komissarov, Nikolay Moshegov, Oleg Raisky, Pavel Trubenko, Vladimir Ackermann, Eugene Shcherbakov, Jorg Steinecke, and Alexander Ovtchinnikov "High-efficiency 970-nm multimode pumps", Proc. SPIE 5711, High-Power Diode Laser Technology and Applications III, (17 March 2005); https://doi.org/10.1117/12.585907

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