23 February 2009 Recent progress in fiber-coupled multi-mode pump module and broad-area laser-diode performance from 800-1500 nm
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Abstract
We present performance improvements of fiber-coupled pump modules and broad-area lasers at 8xx nm, 9xx nm and 14xx nm wavelengths. Broad-area lasers with a 200 μm aperture at 808 nm for direct diode applications emit 11W CW and 30W pulsed. Pump modules at 830 nm for printing applications show excellent linearity, power stability of 2% and 95% of the power within 0.12 NA into a 50 μm core fiber at 1W CW. Broad-area lasers at 880 nm for pumping applications emit 18W CW with a peak wallplug efficiency of 64%. An improved design of 9xx pump modules is demonstrated with built-in feedback-protection (>30 dB at 1060 nm) that allows safe operation in multi-kW peak-power fiber lasers. Up to 3W of optical power with slope efficiency and peak wallplug efficiency of 0.64 W/A and 46%, respectively, is presented for 14xx nm broad-area lasers with a 100 μm wide aperture.
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Vince Wong, Vince Wong, Victor Rossin, Victor Rossin, Jay Skidmore, Jay Skidmore, Prasad Yalamanchili, Prasad Yalamanchili, Xiangdong Qui, Xiangdong Qui, Richard Duesterberg, Richard Duesterberg, Pierre Doussiere, Pierre Doussiere, David Venables, David Venables, Reddy Raju, Reddy Raju, James Guo, James Guo, Michael Au, Michael Au, Laura Zavala, Laura Zavala, Matthew Peters, Matthew Peters, Guowen Yang, Guowen Yang, YuZhong Dai, YuZhong Dai, Erik Zucker, Erik Zucker, "Recent progress in fiber-coupled multi-mode pump module and broad-area laser-diode performance from 800-1500 nm", Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71980S (23 February 2009); doi: 10.1117/12.809651; https://doi.org/10.1117/12.809651
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