APS » PROLA » Phys. Rev. Lett. » Volume 79 » Issue 6

Phys. Rev. Lett. 79, 1006 - 1009 (1997)

Phase-Locked High-Order Harmonic Sources

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Raoul Zerne1, Carlo Altucci1, Marco Bellini2, Mette B. Gaarde1,3, T. W. Hänsch2,4, 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

Received 12 February 1997

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.


©1997 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v79/p1006
DOI: 10.1103/PhysRevLett.79.1006
PACS: 32.80.Rm, 42.65.Ky

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