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Optics Letters

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  • Vol. 25, Iss. 2 — Jan. 15, 2000
  • pp: 135–137

Extreme ultraviolet interferometry measurements with high-order harmonics

D. Descamps, C. Lyngå, J. Norin, A. L'Huillier, C.-G. Wahlström, J.-F. Hergott, H. Merdji, P. Salières, M. Bellini, and T. W. Hänsch  »View Author Affiliations


Optics Letters, Vol. 25, Issue 2, pp. 135-137 (2000)
http://dx.doi.org/10.1364/OL.25.000135


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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 2–1020electrons/cm>3 are measured.

© 2000 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers
(190.0190) Nonlinear optics : Nonlinear optics
(190.4160) Nonlinear optics : Multiharmonic generation
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

Citation
D. Descamps, C. Lyngå, J. Norin, A. L'Huillier, C.-G. Wahlström, J.-F. Hergott, H. Merdji, P. Salières, M. Bellini, and T. W. Hänsch, "Extreme ultraviolet interferometry measurements with high-order harmonics," Opt. Lett. 25, 135-137 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-2-135

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