TITLE

Sub-femtosecond X-ray pulse generation and measurement

AUTHOR(S)
Kienberger, R.; Hentschel, M.; Spielmann, C.; Reider, G.A.; Milosevic, N.; Heinzmann, U.; Drescher, M.; Krausz, F.
PUB. DATE
June 2002
SOURCE
Applied Physics B: Lasers & Optics;2002 Supplement, Vol. 74 Issue 9, ps3
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the generation and measurement of isolated soft-X-ray pulses (λ[sub X] = 14 nm) with a duration of τ[sub X] =650±150 attoseconds (as) by using few-cycle intense visible/near-infrared (λ[sub 0] = 750 nm) laser pulses. For the temporal characterization of the X-ray pulses, a cross-correlation technique relying on laser field assisted X-ray photoemission from krypton atoms was employed. The experimental results bear direct evidence of the X-ray pulse being synchronized to the field oscillations of the visible-light pulse with attosecond precision and of bound–free electronic transitions from the 4p state of krypton responding to 90-eV excitation on an attosecond time scale. As a first demonstration of attosecond metrology, the synchronized single sub-fs X-ray pulses were used for tracing the electric field oscillations in a visible-light wave with a resolution of better than 150 as.
ACCESSION #
7123125

 

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