Characterization of few-fs deep-UV dispersive waves by ultra-broadband transient-grating XFROG

Alexey Ermolov*, Heli Valtna-Lukner, John Travers, Philip St. J. Russell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


A multi-shot transient-grating cross-correlation frequency-resolved optical gating (FROG) is implemented for the characterization of nanojoule-scale, few-femtosecond, deep-ultraviolet pulses. In theory, the system can characterize pulses with a bandwidth extending from below 200 nm to above 1.5 μm. It is experimentally shown that a 200 THz (50 nm) wide dispersive wave centered at 275 nm, generated in a gas-filled HC-PCF, has a temporal duration of 4 fs. The numerical simulations agree well with the experiment. The results confirm that dispersive wave emission in a gas-filled HC-PCF can be used as a novel source of ultrashort UV pulses in a range of applications, for example, ultrafast UV pump-probe spectroscopy.

Original languageEnglish
Pages (from-to)5535-5538
Number of pages4
JournalOptics Letters
Issue number23
Early online date2 Nov 2016
Publication statusPublished - 1 Dec 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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