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Open AccessArticle

Temporal Response of Ultrafast Grating Monochromators

CNR—Institute of Photonics and Nanotechnologies, 35131 Padova, Italy
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Appl. Sci. 2018, 8(1), 5; https://doi.org/10.3390/app8010005
Received: 5 December 2017 / Revised: 15 December 2017 / Accepted: 20 December 2017 / Published: 21 December 2017
(This article belongs to the Special Issue Advanced EUV and X-Ray Optics)
The temporal response of double-grating monochromators is analyzed considering two effects on the ultrafast pulse given by the configuration. The first effect is the compensation of the pulse-front tilt, i.e., all the rays emitted by the source in different directions at the same wavelength have to travel the same optical path. The second effect is the group delay introduced by the two gratings, i.e., different wavelengths within the bandwidth transmitted by the slit travel different paths. The methodology to calculate the group delay introduced by the double-grating configuration is presented. Some practical design examples are provided to show the design rules and the achieved performances. View Full-Text
Keywords: diffraction grating; monochromator; ultrafast optics; extreme-ultraviolet and soft X-rays diffraction grating; monochromator; ultrafast optics; extreme-ultraviolet and soft X-rays
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Poletto, L.; Frassetto, F. Temporal Response of Ultrafast Grating Monochromators. Appl. Sci. 2018, 8, 5.

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