Time-Frequency Characterization of Femtosecond Extreme Ultraviolet Pulses

J. Norin; J. Mauritsson; A. Johansson; M. K. Raarup; S. Buil; A. Persson; O. Dühr; M. B. Gaarde; K. J. Schafer; U. Keller; C.-G. Wahlström; A. L'Huillier

doi:10.1103/PhysRevLett.88.193901

Time-Frequency Characterization of Femtosecond Extreme Ultraviolet Pulses

J. Norin, J. Mauritsson, A. Johansson, M. K. Raarup, S. Buil, A. Persson, O. Dühr, M. B. Gaarde, K. J. Schafer, U. Keller, C.-G. Wahlström, and A. L'Huillier

Phys. Rev. Lett. 88, 193901 – Published 25 April 2002

Abstract

We present energy-resolved cross-correlation measurements of an extreme ultraviolet (XUV) pulse, generated as the fifth harmonic (15.5 eV) of an intense 80 fs laser pulse centered at 400 nm. Spectrally resolving the cross-correlation signal allows us to characterize the time-dependent frequency of the XUV pulse. We find that the fifth harmonic has a small negative chirp in excess of that predicted by perturbation theory. In addition, by manipulating the chirp of the driving laser we can induce and measure a positive or a negative chirp on the XUV pulse.

Received 14 November 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.193901

Authors & Affiliations

J. Norin¹, J. Mauritsson¹, A. Johansson¹, M. K. Raarup^2,*, S. Buil^1,†, A. Persson¹, O. Dühr¹, M. B. Gaarde¹, K. J. Schafer^1,3, U. Keller^1,4, C.-G. Wahlström¹, and A. L'Huillier¹

¹Department of Physics, Lund Institute of Technology, P.O. Box 118, S-221 00 Lund, Sweden
²Institute of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark
³Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louidisns 70803-4001
⁴Ultrafast Laser Physics Laboratory, Institute of Quantum Electronics, ETH Hönggerberg-HPT, CH-8093 Zürich, Switzerland

^*Present address: Department of Biophysics, Leiden University, Leiden, The Netherlands.
^†Present address: Laboratoire de Magnétisme et d'Optique de Versailles (LMOV), CNRS, Versailles, France.