APS » PROLA » Phys. Rev. Lett. » Volume 91 » Issue 10

Phys. Rev. Lett. 91, 103902 (2003) [4 pages]

Frequency-Resolved Optical Gating of Femtosecond Pulses in the Extreme Ultraviolet
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Taro Sekikawa *, Teruto Kanai, and Shuntaro Watanabe
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8581, Japan

Received 12 March 2003; published 5 September 2003

Femtosecond extreme ultraviolet (XUV) pulses were fully characterized for the first time by using a newly developed cross-correlation frequency-resolved optical gating (FROG) technique in the XUV region. This method utilizes laser-assisted two-photon ionization as a nonlinear optical process. Near-infrared pulses characterized by FROG were used as a reference. The amplitude and phase of XUV pulses with a pulse duration of 10 fs were found to be in good agreement with a model analysis, taking into account phase modulation by ionization, self-phase modulation, and the atomic dipole phase.


©2003 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v91/e103902
DOI: 10.1103/PhysRevLett.91.103902
PACS: 42.65.Ky, 32.80.Rm, 42.65.Re

* Electronic address: sekikawa@issp.u-tokyo.ac.jp

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