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Journal Articles The European Physical Journal D : Atomic, molecular, optical and plasma physics Year : 2003

Optimization of the focused flux of high harmonics

Abstract

Following the theoretical predictions, the observation of two-photon processes by interaction of vacuum ultraviolet (VUV) radiation with inner-shell levels of atoms requires focused intensities in the 10^13-10^14 W/cm^2 range. Our aim is to reach this regime in order to study non-linear optics at these wavelengths. We first optimized the high harmonic conversion efficiency in argon by studying the best experimental conditions for phase-matching, concentrating on focus geometry related to laser energy, cell length and position relative to the focus. We then studied the resulting harmonic beam focusability by a toroidal mirror ( f=10 cm) and made an image of the harmonic focus. We conclude with an evaluation of the focused intensity that we are able to reach experimentally.

Dates and versions

hal-00523078 , version 1 (04-10-2010)

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Cite

Sophie Kazamias, D. Douillet, Constance Valentin, Thierry Lefrou, G. Grillon, et al.. Optimization of the focused flux of high harmonics. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2003, 26 (1), pp.47 - 50. ⟨10.1140/epjd/e2003-00083-y⟩. ⟨hal-00523078⟩
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