Ultrafast Optics and Strong Field Physics

Trajectory interferences in a semi-infinite gas cell

  1. S.M. Teichmann1,*,
  2. D.R. Austin1,
  3. P. Bates1,
  4. S. Cousin1,
  5. A. Grün1,
  6. M. Clerici2,3,
  7. A. Lotti2,4,
  8. D. Faccio2,5,
  9. P. Di Trapani2,
  10. A. Couairon4,
  11. J. Biegert1,6

Article first published online: 16 JAN 2012

DOI: 10.1002/lapl.201110116

Issue

Laser Physics Letters

Laser Physics Letters

Volume 9, Issue 3, pages 207–211, March 2012

Additional Information

How to Cite

Teichmann, S.M., Austin, D.R., Bates, P., Cousin, S., Grün, A., Clerici, M., Lotti, A., Faccio, D., Di Trapani, P., Couairon, A. and Biegert, J. (2012), Trajectory interferences in a semi-infinite gas cell. Laser Phys. Lett., 9: 207–211. doi: 10.1002/lapl.201110116

Author Information

  1. 1

    ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels Barcelona, Spain

  2. 2

    Nazionale Interuniversitario per le Scienze Fisiche della Materia and Department of Mathematics and Physics, Università dell'Insurbia, 22100 Como, Italy

  3. 3

    INRS-EMT, Université du Québec, Varennes, Québec J3X 1S2, Canada

  4. 4

    Centre de Physique Théorique, École Polytechnique, Centre National de la Recherche Scientifique, 91128 Palaiseau, France

  5. 5

    School of Engineering and Physical Sciences, Scottish Universities Physics Alliance, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, UK

  6. 6

    ICREA-Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain

*ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain

Publication History

  1. Issue published online: 13 FEB 2012
  2. Article first published online: 16 JAN 2012
  3. Manuscript Accepted: 24 OCT 2011
  4. Manuscript Revised: 21 OCT 2011
  5. Manuscript Received: 12 OCT 2011

Funded by

  • Spanish Ministry of Education and Science through its Consolider Program Science (SAUUL CSD 2007-00013), as well as through Plan Nacional (FIS2008-06368-C02-01)
  • LASERLABEUROPE, grant agreement 228334
  • Marie Curie Intra-European Fellowship (project 276556-BAXHHG)
  • Consorzio Nazionale Interuniversitario per le Scienze della Materia, project Innesco

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Keywords:

  • high harmonic generation;
  • quantum path interference;
  • strong field physics

Abstract

We observe ring structures in high-order harmonics generated in the loose focusing geometry of a semi-infinite gas cell. Phase matching and absorption considerations indicate that the measured signal is restricted to the harmonics generated in the exit plane. We therefore attribute the ring structure to interferences in the single-atom response in the transverse exit plane of the interaction region. Calculations using the stationary phase approximation were used to analyze the contributions of the long and the short trajectories, respectively, and confirm our experimental findings. The simple setup makes quantum path interference measurements feasible without the need for special filtering mechanisms. (© 2012 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA) (© 2011 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)

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