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Flat-Top Supercontinuum and Tunable Femtosecond Fiber Laser Sources at 1.9–2.5 μm
Journal of Lightwave Technology
Journal of Lightwave Technology Abstract -We report the high-energy flat-top supercontinuum covering the mid-infrared wavelength range of 1.9-2.5 μm as well as electronically tunable femtosecond pulses between 1.98-2.22 μm directly from the thulium-doped fiber laser amplifier. Comparison of experimental results with numerical simulations confirms that both sources employ the same nonlinear optical mechanism -Raman soliton frequency shift occurring inside the Tm-fiber amplifier. To illustratedoi:10.1109/jlt.2016.2604039 fatcat:5o4bvlbdurgurogmms7h5zzkuq