Wavelength tunable ultra-short pulses based on a flat broadband spectrum generated in a nonlinear ytterbium-doped fiber amplifier
(color online) Autocorrelation traces at different center wavelengths: (a) 1080 nm, (b) 1100 nm, (c) 1120 nm, (d) 1140 nm, (e) 1160 nm, and (f) 1180 nm. Insets are corresponding spectra.
