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La valutazione delle attività di ricerca che si svolgono nelle università ha assunto un'importanza rilevante sia per l'intero sistema universitario sia all'interno di ogni singolo ateneo. Roma Tre si è quindi dotata di idonei strumenti informativi in grado di supportare al meglio le azioni di monitoraggio e di valutazione delle attività di ricerca svolte nei propri dipartimentied ha realizzato una Anagrafe della Ricerca di Ateneo.
EnglishWe discuss the interaction of spatial solitary waves in nematic liquid crystals, termed nematicons, with localized inhomogeneities in the distribution of the optic axis. For beam waists small compared with the defect width, self-localization is preserved; in the opposite limit the spatial solitary waves undergo significant attenuation due to diffractive losses, to the extent that nematicons are essentially destroyed. Owing to their power-waist dependence spatial solitary waves interacting with defects in nematic liquid crystals are subject to an excitation-dependent transition from particlelike to wavelike behavior. In the latter regime their trajectory varies with input power, leading to novel approaches to the design and realization of all-optical circuits.
| Titolo: | Scattering of reorientational optical solitary waves at dielectric perturbations |
| Autori: | |
| Data di pubblicazione: | 2012 |
| Rivista: | |
| Citazione: | Alberucci A, Assanto G, Minzoni AA, & Smyth NF (2012). Scattering of reorientational optical solitary waves at dielectric perturbations. PHYSICAL REVIEW A, 85(1). |
| Abstract: | We discuss the interaction of spatial solitary waves in nematic liquid crystals, termed nematicons, with localized inhomogeneities in the distribution of the optic axis. For beam waists small compared with the defect width, self-localization is preserved; in the opposite limit the spatial solitary waves undergo significant attenuation due to diffractive losses, to the extent that nematicons are essentially destroyed. Owing to their power-waist dependence spatial solitary waves interacting with defects in nematic liquid crystals are subject to an excitation-dependent transition from particlelike to wavelike behavior. In the latter regime their trajectory varies with input power, leading to novel approaches to the design and realization of all-optical circuits. |
| Handle: | http://hdl.handle.net/11590/133205 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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