Abstract

Low-noise supercontinuum (SC) generation in photonic crystal fibers (PCFs) can be achieved by using pump pulses of femtosecond (fs) duration and low soliton numbers [1]. The small cores sizes needed to obtain anomalous dispersion for pump wavelengths in the Yb gain band (typically 1030-1070 nm) implies a severe restriction on power for such pump pulses. One possible strategy for power scaling is to pump in higher-order fiber modes, which can attain the desired dispersion properties in larger cores. This contribution aims to explore the properties of such continua, in particular the conditions necessary to retain a single-mode character of the output.

© 2019 IEEE

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