Recent measurements of the absolute diffraction efficiency of plane gratings in the conical diffraction mounting (in which the light approaches the grating in the plane parallel to the direction of the grooves) are presented. Three gratings have been tested at the beamline BEAR (Elettra Synchrotron, Trieste) in the 10-130 nm region, showing a peak efficiency as high as 70%. The aim of these measurements is the use of two gratings in the conical diffraction mounting for the realization of a high-throughput time-compensated monochromator for the spectral selection of high-order harmonic radiation produced by the interaction between an ultrashort laser pulse (less than 100 fs) and a gas jet. The monochromatic and ultrashort pulse at the monochromator exit can be used for the injection of a Free Electron Laser. The theory of the time-compensation with gratings will be briefly resumed, the design of the monochromator will be presented, and the results of the measurements at BEAR will be discussed.

Efficiency of gratings in the conical diffraction mounting for an EUV time-compensated monochromatorProceedings of SPIE / Luca, Poletto; Nannarone, Stefano. - STAMPA. - 5534:(2004), pp. 144-153. (Intervento presentato al convegno Conference on Fourth Generation X-Ray Sources and Optics II tenutosi a Denver, CO nel AUG 02-03, 2004) [10.1117/12.573135].

Efficiency of gratings in the conical diffraction mounting for an EUV time-compensated monochromatorProceedings of SPIE

NANNARONE, Stefano
2004

Abstract

Recent measurements of the absolute diffraction efficiency of plane gratings in the conical diffraction mounting (in which the light approaches the grating in the plane parallel to the direction of the grooves) are presented. Three gratings have been tested at the beamline BEAR (Elettra Synchrotron, Trieste) in the 10-130 nm region, showing a peak efficiency as high as 70%. The aim of these measurements is the use of two gratings in the conical diffraction mounting for the realization of a high-throughput time-compensated monochromator for the spectral selection of high-order harmonic radiation produced by the interaction between an ultrashort laser pulse (less than 100 fs) and a gas jet. The monochromatic and ultrashort pulse at the monochromator exit can be used for the injection of a Free Electron Laser. The theory of the time-compensation with gratings will be briefly resumed, the design of the monochromator will be presented, and the results of the measurements at BEAR will be discussed.
2004
Conference on Fourth Generation X-Ray Sources and Optics II
Denver, CO
AUG 02-03, 2004
5534
144
153
Luca, Poletto; Nannarone, Stefano
Efficiency of gratings in the conical diffraction mounting for an EUV time-compensated monochromatorProceedings of SPIE / Luca, Poletto; Nannarone, Stefano. - STAMPA. - 5534:(2004), pp. 144-153. (Intervento presentato al convegno Conference on Fourth Generation X-Ray Sources and Optics II tenutosi a Denver, CO nel AUG 02-03, 2004) [10.1117/12.573135].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/743089
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