Article

Applied Physics B

, Volume 74, Supplement 1, pp s3-s9

First online:

Sub-femtosecond X-ray pulse generation and measurement

  • R. KienbergerAffiliated withInstitut für Photonik, Technische Universität Wien, Gusshausstr. 27, 1040 Wien, Austria
  • , M. HentschelAffiliated withInstitut für Photonik, Technische Universität Wien, Gusshausstr. 27, 1040 Wien, Austria
  • , C. SpielmannAffiliated withInstitut für Photonik, Technische Universität Wien, Gusshausstr. 27, 1040 Wien, Austria
  • , G.A. ReiderAffiliated withInstitut für Photonik, Technische Universität Wien, Gusshausstr. 27, 1040 Wien, Austria
  • , N. MilosevicAffiliated withInstitut für Photonik, Technische Universität Wien, Gusshausstr. 27, 1040 Wien, Austria
  • , U. HeinzmannAffiliated withFakultät für Physik, Universität Bielefeld, 33 615 Bielefeld, Germany
  • , M. DrescherAffiliated withFakultät für Physik, Universität Bielefeld, 33 615 Bielefeld, Germany
  • , F. KrauszAffiliated withInstitut für Photonik, Technische Universität Wien, Gusshausstr. 27, 1040 Wien, Austria

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract.

We report the generation and measurement of isolated soft-X-ray pulses (λX= 14 nm) with a duration of τX=650±150 attoseconds (as) by using few-cycle intense visible/near-infrared (λ0= 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.

PACS: 32.80.Fb; 42.55.Vc; 42.65.Ky; 42.65.Re