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Opt Lett. 2012 Mar 1;37(5):770-2. doi: 10.1364/OL.37.000770.

Extreme supercontinuum generation to the deep UV.

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Max Planck Institute for the Science of Light, G√ľnther-Scharowsky-Strasse 1, 91058 Erlangen, Germany.


We report the formation of an ultrabroad supercontinuum down to 280 nm in the deep UV by pumping sharply tapered (5-30 mm taper lengths) solid-core photonic crystal fibers with 130 fs, 2 nJ pulses at 800 nm. The taper moves the point of soliton fission to a position where the core is narrower, a process that requires normal dispersion at the input face of the fiber. We find that the generation of deep-UV radiation is limited by strong two-photon absorption in the silica.


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