Zobrazeno 1 - 10
of 91
pro vyhledávání: '"BOSCAINO, Roberto"'
We studied the temperature dependence of the absorption coefficient of amorphous SiO$_2$ in the range from 8 to 17.5~eV obtained by Kramers-Kronig dispersion analysis of reflectivity spectra. We demonstrate the main excitonic resonance at 10.4~eV to
Externí odkaz:
http://arxiv.org/abs/1006.5546
We report time-resolved photoluminescence spectra of point defects in amorphous silicon dioxide (silica), in particular the decay kinetics of the emission signals of extrinsic Oxygen Deficient Centres of the second type from singlet and directly-exci
Externí odkaz:
http://arxiv.org/abs/0809.1727
We report nanosecond time-resolved photoluminescence measurements on the isoelectronic series of oxygen deficient centers in amorphous silica, Si-ODC(II), Ge-ODC(II) and Sn-ODC(II) which are responsible of fluorescence activities at $\sim$4 eV under
Externí odkaz:
http://arxiv.org/abs/0809.1599
The article describes an experimental method that allows to estimate the inhomogeneous and homogeneous linewidths of the photoluminescence band of a point defect in an amorphous solid. We performed low temperature time-resolved luminescence measureme
Externí odkaz:
http://arxiv.org/abs/0805.4507
Publikováno v:
In Journal of Non-Crystalline Solids 2009 355(18):1028-1033
Autor:
Rizzolo, Serena, Girard, Sylvain, Boukenter, Aziz, Ouerdane, Youcef, Boscaino, Roberto, Paillet, Philippe, Marcandella, Claude, Périsse, Jean-Reynald, Cannas, Marco
Mixed temperature and radiation effects on fluorine-doped optical fibers.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::211862a88266035e86c4663d25e2201e
https://oatao.univ-toulouse.fr/23030/
https://oatao.univ-toulouse.fr/23030/
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 266:2945-2948
We report time resolved photoluminescence spectra of irradiated silica under excitation with a laser tunable in the visible and UV range. The investigated samples exhibit the emission band at 1.9 eV associated with non-bridging oxygen hole centers, w
Autor:
RIZZOLO, Serena, MORANA, Adriana, CANNAS, Marco, BOSCAINO, Roberto, Bauer, S, Perisse, J, Boukenter, A, Ouerdane, Y, Girard, S, Nacir, B.
We present a study on 0.8 MeV neutron-induced defects up to fluences of 1017 n/cm² in fluorine doped fibers by using electron paramagnetic resonance, optical absorption and confocal micro-luminescence techniques. Our results allow to address the mic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3658::a3b414cf6e32d07880318e9f6f2187f3
http://hdl.handle.net/10447/98003
http://hdl.handle.net/10447/98003
Autor:
AGNELLO, Simonpietro, BUSCARINO, Gianpiero, ALESSI, Antonino, SCIORTINO, Luisa, MESSINA, Fabrizio, CANNAS, Marco, GELARDI, Franco Mario, BOSCAINO, Roberto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3658::9ed5c435178e2318a17bf3026976792a
http://hdl.handle.net/10447/98130
http://hdl.handle.net/10447/98130
Autor:
VACCARO, Lavinia, CANGIALOSI, Chiara, SPALLINO, Luisa, CANNAS, Marco, GELARDI, Franco Mario, BOSCAINO, Roberto
The effect of sintering on the optical properties of silica nanoparticles, a mean diameter of ~14 nm, are investigated by absorption and luminescence experiments. The sintering is induced by a thermal treatment of 1000 °C for 272 hours; after that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3658::aa3c7957733f210902c71209cd36f4fa
http://hdl.handle.net/10447/96330
http://hdl.handle.net/10447/96330