Dr. Paolo Miotti Profile

Dr. Paolo Miotti

at Univ degli Studi di Padova

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Author

Publications (13)

Proceedings Article | 24 April 2019 Paper

Comparison between classical and off-plane diffraction efficiency for the soft x-ray region

N. Fabris, F. Frassetto, P. Miotti, F. Samparisi, C. Spezzani, P. Zuppella, L. Poletto

Proceedings Volume 11038, 110380W (2019) https://doi.org/10.1117/12.2522609

KEYWORDS: Diffraction, Diffraction gratings, Monochromators, X-rays

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Proceedings Article | 17 September 2018 Paper

Design and realization of a grazing-incidence plane-grating monochromator

N. Fabris, F. Frassetto, P. Miotti, C. Spezzani, L. Poletto

Proceedings Volume 10760, 1076009 (2018) https://doi.org/10.1117/12.2319691

KEYWORDS: Mirrors, Monochromators, Monochromatic aberrations, Spectral resolution, Extreme ultraviolet, Optical components, Diffraction gratings, Optical design

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Proceedings Article | 23 August 2017 Paper

Soft x-ray grating compressors for free-electron-laser pulses

Paolo Miotti, Nicola Fabris, Fabio Frassetto, Stefano Turchini, Paola Zuppella, Luca Poletto

Proceedings Volume 10386, 103860R (2017) https://doi.org/10.1117/12.2275031

KEYWORDS: Optical design, Free electron lasers, Ultrafast phenomena, Extreme ultraviolet, Collimation, Optical components, Synchrotron radiation, X-ray sources, Synchrotrons, X-rays

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Proceedings Article | 23 June 2017 Presentation + Paper

Design of compressors for FEL pulses using deformable gratings

Stefano Bonora, Nicola Fabris, Fabio Frassetto, Ennio Giovine, Paolo Miotti, Martino Quintavalla, Luca Poletto

Proceedings Volume 10237, 102370T (2017) https://doi.org/10.1117/12.2267473

KEYWORDS: Diffraction gratings, Diffraction, Ultrafast phenomena, Extreme ultraviolet

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Proceedings Article | 23 September 2015 Paper

Photon handling on femtosecond ultrafast beamlines

Luca Poletto, Fabio Frassetto, Paolo Miotti

Proceedings Volume 9626, 96261Q (2015) https://doi.org/10.1117/12.2191685

KEYWORDS: Extreme ultraviolet, Monochromators, Mirrors, Ultrafast phenomena, Code division multiplexing, Diffraction gratings, Optical design, Femtosecond phenomena, Monochromatic aberrations, Spectral resolution

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Proceedings Article | 12 May 2015 Paper

Grating-based pulse compressor for applications to FEL sources

Luca Poletto, Fabio Frassetto, Paolo Miotti, David Gauthier, Marta Fajardo, Benoit Mahieu, Cristian Svetina, Marco Zangrando, Philippe Zeitoun, Giovanni De Ninno

Proceedings Volume 9512, 951210 (2015) https://doi.org/10.1117/12.2182381

KEYWORDS: Free electron lasers, Diffraction gratings, Code division multiplexing, Diffraction, Optical design, Dispersion, Grazing incidence, Collimation, Ultrafast phenomena, Reflectivity

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Proceedings Article | 12 May 2015 Paper

Polarizers for a spectral range centered at 121.6 nm operating by reflectance or by transmittance

Juan Larruquert, A. Marco Malvezzi, Angelo Giglia, José Aznárez, Luis Rodríguez-de Marcos, José Méndez, Paolo Miotti, Fabio Frassetto, Giuseppe Massone, Gerardo Capobianco, Silvano Fineschi, Stefano Nannarone

Proceedings Volume 9510, 951008 (2015) https://doi.org/10.1117/12.2179446

KEYWORDS: Polarizers, Reflectivity, Transmittance, Polarization, Magnesium fluoride, Polarimetry, Optical filters, Multilayers, Solar processes, Aluminum

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Proceedings Article | 8 October 2014 Paper

Spectrometer for single-shot x-ray emission and photon diagnostics

F. Frassetto, P. Miotti, C. Callegari, M. de Simone, P. Finetti, E. Giangrisostomi, C. Grazioli, F. Iesari, A. Kivimäki, R. Mincigrucci, E. Principi, S. Stagira, A. Di Cicco, M. Coreno, L. Poletto

Proceedings Volume 9210, 92100E (2014) https://doi.org/10.1117/12.2061765

KEYWORDS: Spectroscopy, Free electron lasers, Sensors, X-rays, Mirrors, Diagnostics, Luminescence, Relays, Synchrotrons, Silicon

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Proceedings Article | 26 September 2013 Paper

Characterization of linear polarizers in the wavelength range 100-150 nm (VUV) for solar physics applications

G. Capobianco, M. Malvezzi, S. Fineschi, J. Larruquert, A. Giglia, J. Aznarez, G. Massone, G. Crescenzio, S. Nannarone, F. Frassetto, J. Mendez, L. Rodríguez-de Marcos, P. Miotti

Proceedings Volume 8862, 88620Y (2013) https://doi.org/10.1117/12.2027002

KEYWORDS: Reflectivity, Vacuum ultraviolet, Polarization, Laser induced fluorescence, Polarizers, Linear polarizers, Transmittance, Solar processes, Polarimetry, Multilayers

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Proceedings Article | 26 September 2013 Paper

Test of a multilayer-coated EUV grating for I-IV order spectroscopic measurements of the solar corona

Luca Poletto, Fabio Frassetto, Paolo Miotti, Angelo Giglia, Alain Jody Corso, Paola Zuppella, Maria-Guglielmina Pelizzo, Silvano Fineschi, Ester Antonucci, Giampiero Naletto, Piergiorgio Nicolosi, Marco Romoli

Proceedings Volume 8862, 886208 (2013) https://doi.org/10.1117/12.2030343

KEYWORDS: Coating, Diffraction gratings, Spectroscopy, Gold, Imaging spectroscopy, Diffraction, Coronagraphy, Reflectivity, Multilayers, Extreme ultraviolet

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METIS, the Multi Element Telescope for Imaging and Spectroscopy, is a coronagraph selected by the European Space Agency to be part of the payload of the Solar Orbiter mission. The original METIS proposal included four optical paths, for observations in: 1) linearly polarized visible-light (590-650 nm), 2) narrow-band ultraviolet HI Lyman-alpha (121.6 nm), 3) narrow-band extreme-ultraviolet HeII Lyman-alpha (30.4 nm), 4) spectrographic mode for the HI Lyman- alpha and He II Lyman-alpha in corona. The design, coating performances, and test activities of the grating for the spectroscopic path are here described. The grating is optimized to work at near normal incidence and to diffract the 121.6 nm radiation at the first order and the 30.4 nm at its 4th order, consequently the two spectroscopic channels are overlapped on the focal plane. The grating is spherical with variable-line-spaced rulings, 1800 gr/mm central density. The selection of the spectroscopic channel to be acquired, either the 121.6 nm or the 30.4 nm, is made by a suitable filter wheel. The grating is multilayer-coated, to have high efficiency in both the spectral channels. In this paper we describe the tests made on a prototype with flat surface and constant groove spacing. The measures have been carried out at the BEAR beamline at the ELETTRA Synchrotron in Trieste (Italy). The grating was initially coated by gold and successively by a Mo-Si multilayer optimized at 30.4 nm. The efficiencies at the first and fourth order (121.6 and 30.4 nm) have been measured before and after the multilayer deposition. The quality of the multilayer deposition has been tested by atomic force microscope measurements on the grating surface and by reflectivity measurements performed on a test reference mirror. The experimental data are compared with numerical simulations accounting for the coating roughness and the smoothening effect on the blaze profile after the multilayer deposition. To our knowledge, this is the first time that such a grating configuration is proposed.

Proceedings Article | 3 May 2013 Paper

Multilayer reflective polarizers for the far ultraviolet

Juan Larruquert, José Aznárez, Luis Rodríguez-de Marcos, José Méndez, A. Marco Malvezzi, Angelo Giglia, Paolo Miotti, Fabio Frassetto, Giuseppe Massone, Stefano Nannarone, Giuseppe Crescenzio, Gerardo Capobianco, Silvano Fineschi

Proceedings Volume 8777, 87771D (2013) https://doi.org/10.1117/12.2017444

KEYWORDS: Polarizers, Polarization, Reflectivity, Magnesium fluoride, Multilayers, Aluminum, Polarimetry, Magnetism, Solar processes, Far ultraviolet

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Proceedings Article | 3 May 2013 Paper

Instrument for single-shot X-Ray emission-spectroscopy experiments

Luca Poletto, Fabio Frassetto, Paolo Miotti, Marcello Coreno, Andrea Di Cicco, Salvatore Stagira

Proceedings Volume 8778, 87780W (2013) https://doi.org/10.1117/12.2017720

KEYWORDS: Free electron lasers, X-rays, Sensors, Spectroscopy, Extreme ultraviolet, Diffraction gratings, Electrons, Spectral resolution, Condensed matter, Back illuminated sensors

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Proceedings Article | 17 September 2012 Paper

Grazing-incidence imaging spectrograph for solar observations in the XUV domain

Fabio Frassetto, Stefano Coraggia, Paolo Miotti, Luca Poletto

Proceedings Volume 8443, 84433V (2012) https://doi.org/10.1117/12.924810

KEYWORDS: Telescopes, Spectrographs, Extreme ultraviolet, Solar processes, Spectroscopy, Mirrors, Device simulation, Space telescopes, Imaging spectroscopy, Grazing incidence

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Showing 5 of 13 publications

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