53-attosecond X-ray pulses reach the carbon K-edge

Jie Li, Xiaoming Ren, Yanchun Yin, Kun Zhao, Andrew Chew, Yan Cheng, Eric Cunningham, Yang Wang, Shuyuan Hu, Yi Wu, Michael Chini and Zenghu Chang ()
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Jie Li: University of Central Florida
Xiaoming Ren: University of Central Florida
Yanchun Yin: University of Central Florida
Kun Zhao: University of Central Florida
Andrew Chew: University of Central Florida
Yan Cheng: University of Central Florida
Eric Cunningham: University of Central Florida
Yang Wang: University of Central Florida
Shuyuan Hu: University of Central Florida
Yi Wu: University of Central Florida
Michael Chini: University of Central Florida
Zenghu Chang: University of Central Florida

Nature Communications, 2017, vol. 8, issue 1, 1-5

Abstract: Abstract The motion of electrons in the microcosm occurs on a time scale set by the atomic unit of time—24 attoseconds. Attosecond pulses at photon energies corresponding to the fundamental absorption edges of matter, which lie in the soft X-ray regime above 200 eV, permit the probing of electronic excitation, chemical state, and atomic structure. Here we demonstrate a soft X-ray pulse duration of 53 as and single pulse streaking reaching the carbon K-absorption edge (284 eV) by utilizing intense two-cycle driving pulses near 1.8-μm center wavelength. Such pulses permit studies of electron dynamics in live biological samples and next-generation electronic materials such as diamond.

Date: 2017
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DOI: 10.1038/s41467-017-00321-0

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