title: Internal frequency conversion extreme ultraviolet interferometer using mutual coherence properties of two high-order-harmonic sources.
abstract: We report on an innovative two-dimensional imaging extreme ultraviolet (XUV) interferometer operating at 32 nm based on the mutual coherence of two laser high order harmonics (HOH) sources, separately generated in gas. We give the first evidence that the two mutually coherent HOH sources can be produced in two independent spatially separated gas jets, allowing for probing centimeter-sized objects. A magnification factor of 10 leads to a micron resolution associated with a subpicosecond temporal resolution. Single shot interferograms with a fringe visibility better than 30% are routinely produced. As a test of the XUV interferometer, we measure a maximum electronic density of 3x10(20) cm(-3) 1.1 ns after the creation of a plasma on aluminum target.
authors: CEA, IRAMIS, Service des Photons Atomes et Molécules, F-91191 Gif- sur-Yvette, France. sandrine.dobosz-dufrenoy@cea.fr
authors: S
authors: S
authors: Dobosz
authors: H
authors: H
authors: Stabile
authors: A
authors: A
authors: Tortora
authors: P
authors: P
authors: Monot
authors: F
authors: F
authors: Réau
authors: M
authors: M
authors: Bougeard
authors: H
authors: H
authors: Merdji
authors: B
authors: B
authors: Carré
authors: Ph
authors: P
authors: Martin
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authors: Joyeux
authors: D
authors: D
authors: Phalippou
authors: F
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authors: Delmotte
authors: J
authors: J
authors: Gautier
authors: R
authors: R
authors: Mercier