Dynamic Orientational Photorefractive Gratings observed in CdSe/CdS nanorods imbedded in liquid Crystal cells (Articolo in rivista)

Type
Label
  • Dynamic Orientational Photorefractive Gratings observed in CdSe/CdS nanorods imbedded in liquid Crystal cells (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.optmat.2010.02.031 (literal)
Alternative label
  • Petti L.; Rippa M.; Fiore A.; Manna L. and Mormile P. (2010)
    Dynamic Orientational Photorefractive Gratings observed in CdSe/CdS nanorods imbedded in liquid Crystal cells
    in Optical materials (Amst., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Petti L.; Rippa M.; Fiore A.; Manna L. and Mormile P. (literal)
Pagina inizio
  • 1060 (literal)
Pagina fine
  • 1065 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • DOI: 10.1016/j.optmat.2010.02.031 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 32 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Cybernetics ''E. Caianiello\" of CNR, Via Campi Flegrei 34, 80072 Pozzuoli, Italy National Nanotechnology Laboratory of CNR-INFM, 73100 Lecce, Italy Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy (literal)
Titolo
  • Dynamic Orientational Photorefractive Gratings observed in CdSe/CdS nanorods imbedded in liquid Crystal cells (literal)
Abstract
  • A novel type of orientational photorefractive device, which consists of liquid crystals and semiconductor nanorods synthesized in our lab with a new seeded type growth approach has been designed and fabri- cated. The device has a symmetric layered structure, formed by a glass substrate, an indium-tin-oxide electrode (ITO), an HTAB aligning layer, a CdSe/CdS nanorods photoconductive layer, a NLCs film. In order to study the photorefractive and the orientational responses of this device we employed asymmetric two- beam coupling (TBC) to measure two-beam coupling gain under the influence of an applied electric field. A refractive index grating was written in the device in a holographic tilted configuration by two p-polarized laser beams at 514 nm. Self-diffraction of the writing beams and diffraction of a probe beam at 633 nm were measured. Our device revealed a very useful behavior in that the grating written in the sample is stable as opposed to the one without nanorods inclusion and it showed strong beam coupling effects. A very high TBC gain coefficient of over 350 cm?1 was achieved at a dc field applied of 3 V/lm. These results open up new possible applications for real-time image/signal-processing. (literal)
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