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Photonics 2017, 4(1), 14; doi:10.3390/photonics4010014

Design Study of Time-Preserving Grating Monochromators for Ultrashort Pulses in the Extreme-Ultraviolet and Soft X-Rays

1
Institute of Photonics and Nanotechnologies, National Research Council of Italy, via Trasea 7, I-35131 Padova, Italy
2
Department of Information Engineering, University of Padova, via Gradenigo 6/B, I-35131 Padova, Italy
*
Author to whom correspondence should be addressed.
Received: 30 January 2017 / Revised: 23 February 2017 / Accepted: 27 February 2017 / Published: 1 March 2017
(This article belongs to the Special Issue Extreme UV Lasers: Technologies and Applications)
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Abstract

The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser pulses in the femtosecond time scale. Broad-band monochromators require the use of diffraction gratings at grazing incidence. A grating can be used for the spectral selection of ultrashort pulses without altering the pulse duration in a significant way, provided that the number of illuminated grooves is equal to the resolution. We discuss here the design conditions to be fulfilled by a grating monochromator that does not increase the pulse duration significantly longer than the Fourier limit. View Full-Text
Keywords: diffraction gratings; ultrafast optics; monochromators diffraction gratings; ultrafast optics; monochromators
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Frassetto, F.; Fabris, N.; Miotti, P.; Poletto, L. Design Study of Time-Preserving Grating Monochromators for Ultrashort Pulses in the Extreme-Ultraviolet and Soft X-Rays. Photonics 2017, 4, 14.

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