22 August 2011 Power scaling of multiple single-mode laser bundles in all-fiber configuration
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We have demonstrated a novel approach to obtain high power narrow-linewidth fiber laser radiation by incoherent beam combination of three single-mode fiber lasers utilizing a laser combiner. The central wavelength of the fiber laser is 1080 nm with an optical bandwidth narrower than 0.3 nm. Each fiber laser channel is based on a direct pumped oscillator. In every laser channel, a 976 nm wavelength, 105 μm fiber pigtailed laser diodes of 9-W maximal power are employed, and the pump power is directly launched into the double-clad Yb-doped fiber. The three single-mode fiber lasers are then incoherently combined by a 4×1 laser combiner. More than 14 W total output power is obtained with a combining efficiency of 90% above.
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Xiao-lin Dong, Xiao-lin Dong, Pu Zhou, Pu Zhou, Xiao-lin Wang, Xiao-lin Wang, Yan-xing Ma, Yan-xing Ma, Wen-bo Du, Wen-bo Du, Jia-jian Zhu, Jia-jian Zhu, Xiao-jun Xu, Xiao-jun Xu, Shao-feng Guo, Shao-feng Guo, } "Power scaling of multiple single-mode laser bundles in all-fiber configuration", Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81923T (22 August 2011); doi: 10.1117/12.901017; https://doi.org/10.1117/12.901017

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