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Journal Articles Physical Review A : Atomic, molecular, and optical physics [1990-2015] Year : 2003

Observation of high-contrast coherence fringes in high-order harmonic generation

Sophie Kazamias
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D. Douillet
C. Valentin
Stéphane Sebban
Philippe Balcou

Abstract

We present a direct measurement of the coherence length in the high-order-harmonic generation process up to orders as high as 25. The harmonic signal generated in an argon gas cell by a 805-nm, 6-mJ, 30-fs laser is studied as a function of medium length and shows very high-contrast coherence fringes. From a one-dimensional time-dependent model, we unravel the conditions for which such Maker fringes can appear in high-order harmonic generation.
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hal-00522997 , version 1 (04-10-2010)

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Sophie Kazamias, D. Douillet, C. Valentin, F. Weihe, Frederika Auge-Rochereau, et al.. Observation of high-contrast coherence fringes in high-order harmonic generation. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2003, 68 (3), pp.033819. ⟨10.1103/PhysRevA.68.033819⟩. ⟨hal-00522997⟩
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