Direct Interferometric Measurement of the Atomic Dipole Phase in High-Order Harmonic Generation

Chiara Corsi, Angela Pirri, Emiliano Sali, Alessandra Tortora, and Marco Bellini
Phys. Rev. Lett. 97, 023901 – Published 10 July 2006

Abstract

We report the first direct measurements of the atomic dipole phase in the process of high-order harmonic generation. Differently from previously reported studies based on frequency chirp measurements, we use extreme ultraviolet interferometry as the most natural and direct way to measure phase shifts. Our approach has the important advantage of allowing us to investigate the effects associated to both the main quantum paths involved in the emission of a particular harmonic, thus offering a particularly clear and simple picture of the underlying electronic dynamics.

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  • Received 16 February 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.023901

©2006 American Physical Society

Authors & Affiliations

Chiara Corsi1, Angela Pirri1, Emiliano Sali1,2, Alessandra Tortora1,3, and Marco Bellini1,3,*

  • 1LENS, Via Nello Carrara 1, 50019 Sesto Fiorentino, Florence, Italy
  • 2Department of Physics, University of Florence, Via Sansone 1, 50019 Sesto Fiorentino, Florence, Italy
  • 3Istituto Nazionale di Ottica Applicata, L.go E. Fermi, 6, I-50125, Florence, Italy

  • *Electronic address: bellini@inoa.it

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Issue

Vol. 97, Iss. 2 — 14 July 2006

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