Trajectory interferences in a semi-infinite gas cell

Teichmann, S.M. et al. (2012) Trajectory interferences in a semi-infinite gas cell. Laser Physics Letters, 9(3), pp. 207-211. (doi: 10.1002/lapl.201110116)

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Clerici, Professor Matteo and Faccio, Professor Daniele
• Authors: 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.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Laser Physics Letters
• Publisher: IOP Publishing
• ISSN: 1612-2011
• ISSN (Online): 1612-202X
• Copyright Holders: Copyright © 2012 by Astro Ltd.
• First Published: First published in Laser Physics Letters 9(3):207-211
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher