G
Giovanni Pierattini
Researcher at ARCO
Publications - 128
Citations - 3364
Giovanni Pierattini is an academic researcher from ARCO. The author has contributed to research in topics: Digital holography & Holography. The author has an hindex of 25, co-authored 128 publications receiving 3222 citations. Previous affiliations of Giovanni Pierattini include Olivetti.
Papers
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Journal ArticleDOI
Evaluation of the internal field in lithium niobate ferroelectric domains by an interferometric method
M. de Angelis,S. De Nicola,Andrea Finizio,Giovanni Pierattini,Pietro Ferraro,Simonetta Grilli,Melania Paturzo +6 more
TL;DR: In this article, the authors evaluated the internal electric field of a ferroelectric engineered-domain in a LiNbO3 wafer crystal by detecting optical path length variation with a noninvasive interferometric interferometry.
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Reflective grating interferometer for measuring the refractive index of transparent materials
TL;DR: In this paper, a new design of interferometer which makes use of a reflective-type diffraction grating is developed, which is easy to align and compact and it is suitable for measuring the refractive indices of transparent materials.
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Investigation on reversed domain structures in lithium niobate crystals patterned by interference lithography.
Simonetta Grilli,Pietro Ferraro,Sergio De Nicola,Andrea Finizio,Giovanni Pierattini,Paolo De Natale,Marco Chiarini +6 more
TL;DR: In this paper, the authors demonstrate fabrication of periodically poled lithium niobate samples by electric field poling, after patterning by interference lithography, and investigate the poling process at an overpoling regime which caused the appearance of submicron dot domains very similar to those induced by backswitch but different in nature.
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Method for superposing reconstructed images from digital holograms of the same object recorded at different distance and wavelength
Domenico Alfieri,Giuseppe Coppola,Sergio De Nicola,Pietro Ferraro,Andrea Finizio,Giovanni Pierattini,Bahram Javidi +6 more
TL;DR: A method for allowing direct perfect superimposition and comparison of Fresnel-transform reconstructions of digital holograms recorded of the same object at different distances and wavelengths is proposed and demonstrated.
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A new approach to high accuracy measurement of the focal lengths of lenses using a digital Fourier transform
TL;DR: In this paper, the focal length of a lens is determined by measuring the number of fringes falling inside a fixed aperture both with and without the test lens inserted in the set-up.