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APS » Journals » Phys. Rev. Lett. » Volume 95 » Issue 24
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Phys. Rev. Lett. 95, 243901 (2005) [4 pages]

Reconstruction of Attosecond Pulse Trains Using an Adiabatic Phase Expansion

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K. Varjú1,*, Y. Mairesse2, P. Agostini2, P. Breger2, B. Carré2, L. J. Frasinski3, E. Gustafsson1, P. Johnsson1, J. Mauritsson1,†, H. Merdji2, P. Monchicourt2, A. L’Huillier1, and P. Salières2
1Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
2Service des Photons, Atomes et Molécules, CEA Saclay, 91191 Gif-sur-Yvette, France
3J. J. Thomson Physical Laboratory, The University of Reading, Whiteknights, P.O. Box 220, Reading RG6 6AF, United Kingdom

Received 28 June 2005; published 6 December 2005

We propose a new method to reconstruct the electric field of attosecond pulse trains. The phase of the high-order harmonic emission electric field is Taylor expanded around the maximum of the laser pulse envelope in the time domain and around the central harmonic in the frequency domain. Experimental measurements allow us to determine the coefficients of this expansion and to characterize the radiation with attosecond accuracy over a femtosecond time scale. The method gives access to pulse-to-pulse variations along the train, including the timing, the chirp, and the attosecond carrier envelope phase.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.243901
DOI:
10.1103/PhysRevLett.95.243901
PACS:
42.65.Ky, 32.80.Rm

*On leave from Department of Optics and Quantum Electronics, University of Szeged, Hungary.

†Presently at Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803-4001, USA.

 
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