Third-order nonlinear optical properties of colloidal Au nanorods systems: saturable and reverse-saturable absorption

Simple item page
AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:32:44Z
Fecha de publicación2016-01-01
ResumenIn this work, we present a study of the nonlinear absorption properties from different gold nanorod (NR) systems in aqueous suspension. The NRs were obtained with the bottom-up protocol by the seed-mediated growth method (SMG), using Ag+ ions at different concentrations, and CTAB as surfactant. By using this method, aspect ratios between 2 and 5 were obtained. The transverse surface plasmons (TSP) are located between 514 - 535 nm, while the longitudinal surface plasmons (LSP) are between 639 - 921 nm, for the different samples studied. The Z-scan technique was implemented for open (OA) and closed (CA) aperture at 532 and 1064 nm, with laser pulses of 26 ps, for vertical and horizontal polarizations, with respect to the incidence plane (horizontal). At 532 nm all samples showed saturable absorption (SA), while for samples with LSP near 1064 nm, such effect was observed only at low-energy pulse experimental conditions. In the high-energy pulse regime, an apparent reverse-saturable absorption (RSA) was observed for both wavelengths. However for 532 nm, it was possible to determine that this effect results from structural changes in the samples, which are manifested through the behavior of nonlinear absorption and refraction curves. These results were used to determine the irradiances to which NRs can be modified by photodegradation. (C) 2015 Optical Society of Americaes_ES
Doihttps://doi.org/10.1364/oe.24.00a154es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4567
Idiomaenes_ES
EditorialOPTICAL SOC AMERes_ES
RelaciónOptics Expresses_ES
URL relacionadohttps://doi.org/10.1364/oe.24.00a154es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteOptics Express
TítuloThird-order nonlinear optical properties of colloidal Au nanorods systems: saturable and reverse-saturable absorptiones_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorGarcia-Ramirez, E. V.
AutorAlmaguer-Valenzuela, S.
AutorSanchez-Dena, O.
AutorBaldovino-Pantaleon, O.
AutorReyes-Esqueda, J. A.
AutorGarcia-Ramirez, E. V.es_ES
AutorAlmaguer-Valenzuela, S.es_ES
AutorSanchez-Dena, O.es_ES
AutorBaldovino-Pantaleon, O.es_ES
AutorReyes-Esqueda, J. A.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número2es_ES
Rango de páginasA154-A167es_ES
URL relacionadahttps://doi.org/10.1364/oe.24.00a154
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen24es_ES

Files

Collections

Documentación Cientifica