http://www.cnr.it/ontology/cnr/individuo/prodotto/ID19207
Dynamic Orientational Photorefractive Gratings observed in CdSe/CdS nanorods doped nematic Liquid Crystal cells (Articolo in rivista)
- Type
- Label
- Dynamic Orientational Photorefractive Gratings observed in CdSe/CdS nanorods doped nematic 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
- 10.1142/S0218863510005066 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Petti L.; Rippa M.; Fiore A.; Manna L. and Mormile P. (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- 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
§ L.petti@cib.na.cnr.it (literal)
- Titolo
- Dynamic Orientational Photorefractive Gratings observed in CdSe/CdS nanorods doped nematic Liquid Crystal cells (literal)
- Abstract
- We observed an orientational photo-refractive effect in semiconductor CdSe/CdS nanorods-doped nematic liquid crystal cells homeotropically aligned. In order to study the photo-refractive and the orientational responses of this cell, we employed both asym- metric two-beam coupling (TBC) to measure two beam coupling gain under the influence of an applied electric field and forced light scattering technique. An optical index grating was written in the device in a holographic tilted configuration by overlapping two laser beams at 514 nm. Self diffraction of the writing beams and diffraction of a probe beam at 633 nm were measured. A high TBC gain coefficient of 270 cm-1 was achieved at a DC field applied of 3.4 V/?m. First-order diffraction efficiencies were evaluated with a maximum efficiency of 7% in the dynamic grating with a nonlinear refractive index, n2, 4 × 1 0 - 2 c m 2 / W f o r E 0 = 3 V/ ? m . (literal)
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