We present an experimental study on supercontinuum generation with high spectral power density by using a commercial nonlinear fiber amplifier. This new approach consists in the simultaneous combination of the amplification of a pulsed seed signal at 1.06 µm and its peak-power-induced spectral broadening as the optical pulse propagates along the amplifying fiber. A 750-nm broadening from 1 µm to 1.75 µm with tunable spectral power density according to the amplifier gain level is obtained. Spectral power density in excess of 3 mW/nm is demonstrated.
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