Extreme ultraviolet interferometry measurements with high-order harmonics

Year: 2000

Authors: Descamps D., Lyngå C., Norin J., L\’Huillier A., Wahlström C.-G., Hergott J.-F., Merdji H., Salières P., Bellini M., Hänsch T.W.

Autors Affiliation: Department of Physics, Lund Institute of Technology, P.O. Box 118, S-221 00 Lund, Sweden; Serv. Photons, Atomes, et Molecules, Centre d\’Etudes de Saclay, 91191 Gif-sue-Yvette, France; Europ. Lab. for Non Lin. Spectrosc., Largo E. Fermi, 2, I-50125 Florence, Italy; Max-Planck-Inst. fur Quantenoptik, P.O. Box 1513, D-85740 Garching, Germany

Abstract: We demonstrate that high-order harmonics generated by short, intense laser pulses in gases provide an interesting radiation source for extreme ultraviolet interferometry, since they are tunable, coherent, of short pulse duration, and simple to manipulate. Harmonics from the 9th to the 15th are used to measure the thickness of an aluminum layer. The 11th harmonic is used to determine the spatial distribution of the electron density of a plasma produced by a 300-ps laser. Electronic densities higher than 2-1020 electrons/cm3 are measured.

Journal/Review: OPTICS LETTERS

Volume: 25 (2)      Pages from: 135  to: 137

KeyWords: X-ray laseer; Generation; Coherence; Radiation
DOI: 10.1364/OL.25.000135

Citations: 87
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