Enhanced off-resonance nonlinear properties of nm-thick layers of polyDCHD-HS on silver films
Anno: 2003
Autori: Giorgetti E., Margheri G., Sottini S., Toci G., Muniz-Miranda M., Moroni L., Dellepiane G.
Affiliazione autori: Ist. di Fis. Applicata Nello Carrara, CNR, Via Panciatichi 64, Firenze 50127, Italy; Dipartimento di Chimica, Università di Firenze, Via della Lastruccia 3, Sesto Fiorentino 50019, Italy; Dipto. di Chim./Chimica Industriale, INFM, Università di Genova, Via Dodecaneso 31, Genova 16146, Italy
Abstract: A very large value of the intensity dependent refractive index was measured at 1064 nm with quasi-monomolecular layers of polyDCHD-HS spun on silver-coated plates and was related to the nanostructured surface of the silver films, which provides an electromagnetic mechanism for the enhancement of nonlinearity through local field effects. This point was confirmed in on-resonance (515 nm) and off-resonance (647 nm) SERS experiments. It is suggested that the experimental data can be accounted for by the existence of an interaction between the p-conjugated system of the polymer chain and the silver surface.
Giornale/Rivista: LASER PHYSICS
Volume: 13 (2) Da Pagina: 293 A: 297
Parole chiavi: Surface plasmonCitazioni: 2dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05Riferimenti 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