1.2-kW single-mode fiber laser based on 100-W high-brightness pump diodes

Hongbo Yu; Dahv A. V. Kliner; Kai-Hsiu Liao; Jeff Segall; Martin H. Muendel; James J. Morehead; Jane Shen; Matt Kutsuris; Johnny Luu; Justin Franke; Kelvin Nguyen; Dave Woods; Fred Vance; David Vecht; David Meng; Richard Duesterberg; Lei Xu; Jay Skidmore; Matthew Peters; Nicolas Guerin; James Guo; Jane Cheng; Jihua Du; Brad Johnson; Dongliang Yin; Allen Hsieh; Peter Cheng; Abdullah Demir; Jason Cai; Rupa Gurram; Kong-Weng Lee; Reddy Raju; Daniel Zou; Raman Srinivasan; Mandeep Saini; Laura Zavala; Victor Rossin; Erik P. Zucker; Hiroaki Ishiguro; Hiroshi Sako

doi:10.1117/12.908454

15 February 2012 1.2-kW single-mode fiber laser based on 100-W high-brightness pump diodes

Hongbo Yu, Dahv A. V. Kliner, Kai-Hsiu Liao, Jeff Segall, Martin H. Muendel, James J. Morehead, Jane Shen, Matt Kutsuris, Johnny Luu, Justin Franke, Kelvin Nguyen, Dave Woods, Fred Vance, David Vecht, David Meng, Richard Duesterberg, Lei Xu, Jay Skidmore, Matthew Peters, Nicolas Guerin, James Guo, Jane Cheng, Jihua Du, Brad Johnson, Dongliang Yin, Allen Hsieh, Peter Cheng, Abdullah Demir, Jason Cai, Rupa Gurram, Kong-Weng Lee, Reddy Raju, Daniel Zou, Raman Srinivasan, Mandeep Saini, Laura Zavala, Victor Rossin, Erik P. Zucker, Hiroaki Ishiguro, Hiroshi Sako

Author Affiliations +

Proceedings Volume 8237, Fiber Lasers IX: Technology, Systems, and Applications; 82370G (2012) https://doi.org/10.1117/12.908454
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

We have demonstrated a monolithic (fully fused), 1.2-kW, Yb-doped fiber laser with near-single-mode beam quality. This laser employs a new generation of high-brightness, fiber-coupled pump sources based on spatially multiplexed single emitters, with each pump providing 100 W at 915 nm within 0.15 NA from a standard 105/125 μm fiber. The fiber laser is end pumped through the high-reflector FBG using a 19:1 fused-fiber pump combiner, eliminating the need for pump/signal combiners. The output wavelength is 1080 nm, with a linewidth of < 0.5 nm FWHM. A peak power of 1.5 kW was reached in modulated operation (1-ms pulse duration) with M² < 1.2.

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Hongbo Yu, Dahv A. V. Kliner, Kai-Hsiu Liao, Jeff Segall, Martin H. Muendel, James J. Morehead, Jane Shen, Matt Kutsuris, Johnny Luu, Justin Franke, Kelvin Nguyen, Dave Woods, Fred Vance, David Vecht, David Meng, Richard Duesterberg, Lei Xu, Jay Skidmore, Matthew Peters, Nicolas Guerin, James Guo, Jane Cheng, Jihua Du, Brad Johnson, Dongliang Yin, Allen Hsieh, Peter Cheng, Abdullah Demir, Jason Cai, Rupa Gurram, Kong-Weng Lee, Reddy Raju, Daniel Zou, Raman Srinivasan, Mandeep Saini, Laura Zavala, Victor Rossin, Erik P. Zucker, Hiroaki Ishiguro, and Hiroshi Sako "1.2-kW single-mode fiber laser based on 100-W high-brightness pump diodes", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82370G (15 February 2012); https://doi.org/10.1117/12.908454

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