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Opt Express. 2011 Mar 14;19(6):4902-7. doi: 10.1364/OE.19.004902.

Coherent supercontinuum generation in photonic crystal fiber with all-normal group velocity dispersion.

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  • 1Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath, BA2 7AY, UK. l.e.hooper@bath.ac.uk


We demonstrate supercontinuum generation in a photonic crystal fiber with all-normal group velocity dispersion. Pumping a short section of this fiber with compressed pulses from a compact amplified fiber laser generates a 200 nm bandwidth continuum with typical self-phase-modulation characteristics. We demonstrate that the supercontinuum is compressible to a duration of 26 fs. It therefore has a high degree of coherence between all the frequency components, and is a single pulse in the time domain. A smooth, flat spectrum spanning 800 nm is achieved using a longer piece of fiber.

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