期刊
OPTICS LETTERS
卷 39, 期 4, 页码 910-913出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.000910
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- Polish National Centre for Research and Development [LIDER/04/198/L-1/09/NCBiR/2010]
We report high-power supercontinuum (SC) generation in a step-index fluorozirconate (ZBLAN) fiber with a zero-dispersion wavelength shifted to similar to 1.9 mu m. Pumping the fluoride fiber with 2.75 W of power provided by a thulium-doped fiber amplifier, a continuous spectrum extending from similar to 0.85 to 4.2 mu m with 2.24 W of average output power was achieved. Over 61% (1.37 W) of the total output power corresponds to wavelengths longer than 3 mu m, which shows, to the best of our knowledge, the highest power conversion efficiency toward the mid-IR spectral band in relation to the output spectrum width. A linear SC power scalability up to 5.24 W, with a spectral band of similar to 0.9-4 mu m, with repetition rate and pump power provided by a 1.55 mu m fiber master-oscillator power amplifier system, is also demonstrated. (C) 2014 Optical Society of America
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