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17 February 2010 Power-scalable long-wavelength Yb-doped photonic bandgap fiber sources
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Abstract
Ytterbium-doped photonic-bandgap fiber sources operating at the long-wavelength edge of the ytterbium gain band are being investigated for high power amplification. Artificial shaping of the gain spectrum by the characteristic distributed filtering effect of the photonic bandgap enables power scaling free of amplified spontaneous emission. As high as 167 W power and 16 dB saturated gain at 1178 nm have been demonstrated. Single-pass frequency doubling to 14.5W 589nm light was also demonstrated with 34% conversion efficiency.
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Christina B. Olausson, Akira Shirakawa, Hiroki Maruyama, Ken-ichi Ueda, Jens K. Lyngsø, and Jes Broeng "Power-scalable long-wavelength Yb-doped photonic bandgap fiber sources", Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 758013 (17 February 2010); https://doi.org/10.1117/12.845938
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