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Proceedings Paper

Photon handling on femtosecond ultrafast beamlines
Author(s): Luca Poletto; Fabio Frassetto; Paolo Miotti
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Paper Abstract

The main topics related to the optical design of table-top ultrafast beamlines with femtosecond or sub-femtosecond resolution for the generation and use of high-order laser harmonics are here discussed. After the generation through laser-gas interaction, the extreme-ultraviolet (XUV) photon beam has to be conditioned and handled. The paper is focused on two main issues: 1) beam monochromatization and 2) beam focusing. The available techniques to realize XUV ultrafast tunable monochromators using gratings are discussed. The main issue to be faced when designing a monochromator is the preservation of the ultrashort duration of the pulse after the monochromatization. The different available grating geometries and some practical realizations are presented. Furthermore, the problems related to the design of the focusing section of XUV ultrafast beamlines are discussed. The effects of the focusing properties on the ultrashort duration of the pulse are considered, namely the focal aberrations due to the optical design. Some optical solutions for XUV ultrafast micro-focusing and results measured on existing beamlines are discussed.

Paper Details

Date Published: 23 September 2015
PDF: 14 pages
Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96261Q (23 September 2015); doi: 10.1117/12.2191685
Show Author Affiliations
Luca Poletto, Istituto di Fotonica e Nanotecnologie Padova (Italy)
Fabio Frassetto, Istituto di Fotonica e Nanotecnologie Padova (Italy)
Paolo Miotti, Istituto di Fotonica e Nanotecnologie Padova (Italy)


Published in SPIE Proceedings Vol. 9626:
Optical Systems Design 2015: Optical Design and Engineering VI
Laurent Mazuray; Rolf Wartmann; Andrew P. Wood, Editor(s)

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