Imaging and quality assessment of high-harmonic focal spots

C. Valentin; D. Douillet; S. Kazamias; Th Lefrou; G. Grillon; F. Augé; G. Mullot; Ph Balcou; P. Mercére; Ph Zeitoun

doi:10.1364/OL.28.001049

Imaging and quality assessment of high-harmonic focal spots

C. Valentin
, D. Douillet
, S. Kazamias
, Th Lefrou
, G. Grillon
, F. Augé
, G. Mullot
, Ph Balcou
, P. Mercére
, Ph Zeitoun

Research output: Contribution to journal › Article › peer-review

Abstract

We present a direct method of studying the focusability of an intense, short-pulse extreme-ultraviolet (XUV) beam obtained by high-harmonic generation. We perform near-field imaging of the focal spot of five high-harmonic orders strongly focused by a broadband toroidal mirror. To visualize the focal spot directly, we image the fluorescence induced by an XUV beam on a cerium-doped YAG crystal on a visible CCD camera. We can thus measure the harmonic spot size on a single image, together with the Strehl ratio, to evaluate the quality of focusing. Such techniques should become instrumental in optimizing the focusing conditions and reaching intensities required for exploring attosecond nonlinear optics in the XUV range.

Original language	English
Pages (from-to)	1049-1051
Number of pages	3
Journal	Optics Letters
Volume	28
Issue number	12
DOIs	https://doi.org/10.1364/OL.28.001049
Publication status	Published - 15 Jun 2003

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10.1364/OL.28.001049

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title = "Imaging and quality assessment of high-harmonic focal spots",

abstract = "We present a direct method of studying the focusability of an intense, short-pulse extreme-ultraviolet (XUV) beam obtained by high-harmonic generation. We perform near-field imaging of the focal spot of five high-harmonic orders strongly focused by a broadband toroidal mirror. To visualize the focal spot directly, we image the fluorescence induced by an XUV beam on a cerium-doped YAG crystal on a visible CCD camera. We can thus measure the harmonic spot size on a single image, together with the Strehl ratio, to evaluate the quality of focusing. Such techniques should become instrumental in optimizing the focusing conditions and reaching intensities required for exploring attosecond nonlinear optics in the XUV range.",

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AU - Valentin, C.

AU - Douillet, D.

AU - Kazamias, S.

AU - Lefrou, Th

AU - Grillon, G.

AU - Augé, F.

AU - Mullot, G.

AU - Balcou, Ph

AU - Mercére, P.

AU - Zeitoun, Ph

PY - 2003/6/15

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N2 - We present a direct method of studying the focusability of an intense, short-pulse extreme-ultraviolet (XUV) beam obtained by high-harmonic generation. We perform near-field imaging of the focal spot of five high-harmonic orders strongly focused by a broadband toroidal mirror. To visualize the focal spot directly, we image the fluorescence induced by an XUV beam on a cerium-doped YAG crystal on a visible CCD camera. We can thus measure the harmonic spot size on a single image, together with the Strehl ratio, to evaluate the quality of focusing. Such techniques should become instrumental in optimizing the focusing conditions and reaching intensities required for exploring attosecond nonlinear optics in the XUV range.

AB - We present a direct method of studying the focusability of an intense, short-pulse extreme-ultraviolet (XUV) beam obtained by high-harmonic generation. We perform near-field imaging of the focal spot of five high-harmonic orders strongly focused by a broadband toroidal mirror. To visualize the focal spot directly, we image the fluorescence induced by an XUV beam on a cerium-doped YAG crystal on a visible CCD camera. We can thus measure the harmonic spot size on a single image, together with the Strehl ratio, to evaluate the quality of focusing. Such techniques should become instrumental in optimizing the focusing conditions and reaching intensities required for exploring attosecond nonlinear optics in the XUV range.

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DO - 10.1364/OL.28.001049

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SN - 0146-9592

VL - 28

SP - 1049

EP - 1051

JO - Optics Letters

JF - Optics Letters

IS - 12

ER -

Imaging and quality assessment of high-harmonic focal spots

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