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Amplified erbium-fiber-laser pulses compressed in large-mode-area fiber show significantly reduced nonlinearity compared to standard-single-mode fiber. Consequently, supercontinuum generated with the pulses compressed in large-mode-area fiber show a 10 dB increase in cross-coherence fringe visibility.
We demonstrate propagation and compression of 14-nJ, 152-fs pulses in the 2100-mum2 effective area, LP07 mode of an intentionally multi-moded fiber. The 12-m length of fiber was coiled to a radius of curvature of 7.5 cm.
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