Phase-Locked High-Order Harmonic Sources

Raoul Zerne; Carlo Altucci; Marco Bellini; Mette B. Gaarde; T. W. Hänsch; Anne L'Huillier; Claire Lyngå; C.-G. Wahlström

doi:10.1103/PhysRevLett.79.1006

Phase-Locked High-Order Harmonic Sources

Raoul Zerne, Carlo Altucci, Marco Bellini, Mette B. Gaarde, T. W. Hänsch, Anne L'Huillier, Claire Lyngå, and C.-G. Wahlström

Phys. Rev. Lett. 79, 1006 – Published 11 August 1997

Abstract

We demonstrate that two harmonic sources generated independently in a xenon gas jet using the same picosecond Nd:YAG laser are locked in phase. The experiment is performed by separating a laser beam into two parallel beams focused at different locations under the nozzle of a gas jet, and therefore producing two independent sources of harmonic radiation, and studying the pattern obtained in the far field when the radiations from these sources interfere. A high and robust fringe visibility is obtained.

Received 12 February 1997

DOI:https://doi.org/10.1103/PhysRevLett.79.1006

Authors & Affiliations

Raoul Zerne¹, Carlo Altucci¹, Marco Bellini², Mette B. Gaarde^1,3, T. W. Hänsch^2,4, Anne L'Huillier¹, Claire Lyngå¹, and C.-G. Wahlström¹

¹Department of Physics, Lund Institute of Technology, P.O. Box 118, S-221 00 Lund, Sweden
²L.E.N.S, Largo E. Fermi, 2, I-50125 Florence, Italy
³Niels Bohr Institute, Ørsted Laboratory, 2100 Copenhagen, Denmark
⁴Max-Planck-Institut für Quantenoptik, P.O. Box 1513, D-85740 Garching, Germany