Trajectory interferences in a semi-infinite gas cell

S. M. Teichmann, D. R. Austin, P. Bates, S. Cousin, A. Gruen, Matteo Clerici, A. Lotti, D. Faccio, P. Di Trapani, A. Couairon, J. Biegert

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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. ((c) 2012 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA) ((c) 2011 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)

Original languageEnglish
Pages (from-to)207-211
Number of pages5
JournalLaser Physics Letters
Volume9
Issue number3
DOIs
Publication statusPublished - Mar 2012

Cite this

Teichmann, S. M., Austin, D. R., Bates, P., Cousin, S., Gruen, A., Clerici, M., Lotti, A., Faccio, D., Di Trapani, P., Couairon, A., & Biegert, J. (2012). Trajectory interferences in a semi-infinite gas cell. Laser Physics Letters, 9(3), 207-211. https://doi.org/10.1002/lapl.201110116