Open AccessAttosecond streaking measurement of extreme ultraviolet pulses using a long-wavelength electric field
Author(s) -
Nariyuki Saito,
Nobuhisa Ishii,
Teruto Kanai,
S. Watanabe,
Jiro Itatani
Publication year - 2016
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep35594
Subject(s) - attosecond , streaking , ultrashort pulse , harmonics , optics , laser , extreme ultraviolet , high harmonic generation , physics , wavelength , optoelectronics , spectroscopy , optical parametric amplifier , materials science , optical amplifier , quantum mechanics , voltage
Long-wavelength lasers have great potential to become a new-generation drive laser for tabletop coherent light sources in the soft X-ray region. Because of the significantly low conversion efficiency from a long-wavelength light field to high-order harmonics, their pulse characterization has been carried out by measuring the carrier-envelope phase and/or spatial dependences of high harmonic spectra. However, these photon detection schemes, in general, have difficulty in obtaining information on the spectral phases, which is crucial to determine the temporal structures of high-order harmonics. Here, we report the first attosecond streaking measurement of high harmonics generated by few-cycle optical pulses at 1.7 μm from a BiB 3 O 6 –based optical parametric chirped-pulse amplifier. This is also the first demonstration of time-resolved photoelectron spectroscopy using high harmonics from a long-wavelength drive laser other than Ti:sapphire lasers, which paves the way towards ultrafast soft X-ray photoelectron spectroscopy.