Spatially resolved refractive index profiles of electrically switchable computer-generated holographic gratings
Anno: 2009
Autori: Zito G., Finizio A., De Nicola S.
Affiliazione autori: Istituto di Cibernetica “E. Caianiello” del Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, 80078 Pozzuoli (Na), Italy
Abstract: We describe a spatially resolved interferometric technique combined with a phase reconstruction method that provides a quantitative two-dimensional profile of the refractive index and spatial distribution of the optical contrast between the on-off states of electrically switchable diffraction gratings as a function of the external electric field. The studied structures are holographic gratings optically written into polymer/liquid crystal composites through single-beam spatial light modulation by means of computer-generated holograms. The electro-optical response of the gratings is also discussed. The diffraction efficiency results to be dependent on the incident light polarization suggesting the possibility to develop polarization dependent switching devices. (C) 2009 Optical Society of America
Giornale/Rivista: OPTICS EXPRESS
Volume: 17 (21) Da Pagina: 18843 A: 18851
Parole chiavi: ELECTOOPTICS; HOLOGRAPHY; POLYMERDOI: 10.1364/OE.17.018843Citazioni: 3dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui