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25 May 2011 High-brightness diode pump sources for solid-state and fiber laser pumping across 8xx-9xx nm range
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Abstract
Advanced solid state laser architectures place increasingly demanding requirements on high-brightness, low-cost QCW laser diode pump sources, with custom apertures both for side and end rod pumping configurations. To meet this need, a new series of scalable QCW pump sources at 808nm and 940nm was developed. The stacks, available in multiple output formats, allow for custom aperture filling by varying both the length and quantity of stacked laser bars. For these products, we developed next-generation laser bars based on improved epitaxial wafer designs delivering power densities of 20W/mm of emission aperture. With >200W of peak QCW power available from a full-length 1cm bar, we have demonstrated power scaling to over 2kW in 10-bar stacks with 55% wall plug efficiency. We also present the design and performance of several stack configurations using full-length and reduced-length (mini) bars that demonstrate the versatility of both the bar and packaging designs. We illustrate how the ROBUST HEAD packaging technology developed at SCD is capable of accommodating variable bar length, pitch and quantity for custom rod pumping geometries. The excellent all-around performance of the stacks is supported by reliability data in line with the previously reported 20 Gshot space-grade qualification of SCD's stacks.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ronen Diamant, Yuri Berk, Shalom Cohen, Genady Klumel, Moshe Levy, Yaki Openhaim, Ophir Peleg, Dan Yanson, and Yoram Karni "High-brightness diode pump sources for solid-state and fiber laser pumping across 8xx-9xx nm range", Proc. SPIE 8039, Laser Technology for Defense and Security VII, 80390E (25 May 2011); doi: 10.1117/12.883831; https://doi.org/10.1117/12.883831
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