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

Luca Poletto; Stefano Bonora; Michele Pascolini; Francesco Borgatti; B. Doyle; Angelo Giglia; Nicola Mahne; Maddalena Pedio; Stefano Nannarone

doi:10.1117/12.573135

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10 November 2004 Efficiency of gratings in the conical diffraction mounting for an EUV time-compensated monochromator

Luca Poletto, Stefano Bonora, Michele Pascolini, Francesco Borgatti, B. Doyle, Angelo Giglia, Nicola Mahne, Maddalena Pedio, Stefano Nannarone

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Proceedings Volume 5534, Fourth Generation X-Ray Sources and Optics II; (2004) https://doi.org/10.1117/12.573135
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

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.

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Luca Poletto, Stefano Bonora, Michele Pascolini, Francesco Borgatti, B. Doyle, Angelo Giglia, Nicola Mahne, Maddalena Pedio, and Stefano Nannarone "Efficiency of gratings in the conical diffraction mounting for an EUV time-compensated monochromator", Proc. SPIE 5534, Fourth Generation X-Ray Sources and Optics II, (10 November 2004); https://doi.org/10.1117/12.573135

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