Extreme supercontinuum generation to the deep UV

S. P. Stark, J. C. Travers, Philip St. J. Russell

Research output: Contribution to journalArticle

52 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)770-772
Number of pages3
JournalOptics Letters
Issue number5
Publication statusPublished - 1 Mar 2012

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