Rapid Communication

Applied Physics B

, Volume 80, Issue 4, pp 399-403

First online:

Supercontinuum extending from > 1000 to 250 nm, generated by focusing ten-fs laser pulses at 805 nm into Ar

  • S. A. TrushinAffiliated withMax-Planck-Institut für Quantenoptik
  • , S. PanjaAffiliated withMax-Planck-Institut für Quantenoptik
  • , K. KosmaAffiliated withMax-Planck-Institut für Quantenoptik
  • , W. E. SchmidAffiliated withMax-Planck-Institut für Quantenoptik
  • , W. FußAffiliated withMax-Planck-Institut für Quantenoptik Email author 

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Ten femtosecond pulses at 805 nm with energy up to 1 mJ were produced by self-phase modulation of 45-fs pulses in Ar at atmospheric pressure and subsequent compression by chirped mirrors. Focusing part of this radiation again into Ar at atmospheric pressure generates a single filament with broadband emission covering the range from > 1000 to 250 nm. This range extends farther into the UV than previously observed with such low energies, overlapping even the region of the third harmonic. Only a small fraction of the power is contained outside the central spot. Using a simple prism compressor, pulses were obtained with durations of 70 fs and energies of 700 nJ in the range 270–290 nm.


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