Journal of Physics: Conference Series

R. C. Fernández-Hernández, R. Gleason-Villagran, C. Torres-Torres, J. C. Cheang-Wong, A. Crespo-Sosa, L. Rodriguez-Fernández, A. López-Suarez, R. Rangel-Rojo, A. Oliver, J. A. Reyes-Esqueda

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8 Citations (Scopus)

Abstract

In this work, we studied the nonlinear absorption and refraction of isotropic and anisotropic metallic nanocomposites, which consist of Au and Ag nanoparticles (NPs) embedded in matrices of SiO 2 . We performed this study at different wavelengths using the Z-scan technique in the picosecond regime. The wavelengths were selected accordingly to the absorption spectra of the nanocomposites, choosing wavelengths into the inter- and intra-band transitions regions, including the surface plasmon (SP) resonance, as well as in the transparent region. For the anisotropic nanocomposites, the polarization and the incident angle were varied in order to evaluate the different components of the third order susceptibility tensor, χ (3) . We observed dramatic changes of sign for both, nonlinear refraction and absorption, when passing from Au to Ag and/or varying the wave length. The results accentuate the importance of the hot-electrons contribution to the nonlinear optical response at this temporal regime, when compared to inter-band and intra-band transitions contributions.
Original languageAmerican English
DOIs
StatePublished - 1 Jan 2011
Eventconference -
Duration: 1 Jan 2011 → …

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Conferenceconference
Period1/01/11 → …

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nanocomposites
physics
refraction
wavelengths
hot electrons
surface plasmon resonance
tensors
absorption spectra
magnetic permeability
nanoparticles
polarization
matrices

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Fernández-Hernández, R. C., Gleason-Villagran, R., Torres-Torres, C., Cheang-Wong, J. C., Crespo-Sosa, A., Rodriguez-Fernández, L., ... Reyes-Esqueda, J. A. (2011). Journal of Physics: Conference Series. Paper presented at conference, . https://doi.org/10.1088/1742-6596/274/1/012074
Fernández-Hernández, R. C. ; Gleason-Villagran, R. ; Torres-Torres, C. ; Cheang-Wong, J. C. ; Crespo-Sosa, A. ; Rodriguez-Fernández, L. ; López-Suarez, A. ; Rangel-Rojo, R. ; Oliver, A. ; Reyes-Esqueda, J. A. / Journal of Physics: Conference Series. Paper presented at conference, .
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abstract = "In this work, we studied the nonlinear absorption and refraction of isotropic and anisotropic metallic nanocomposites, which consist of Au and Ag nanoparticles (NPs) embedded in matrices of SiO 2 . We performed this study at different wavelengths using the Z-scan technique in the picosecond regime. The wavelengths were selected accordingly to the absorption spectra of the nanocomposites, choosing wavelengths into the inter- and intra-band transitions regions, including the surface plasmon (SP) resonance, as well as in the transparent region. For the anisotropic nanocomposites, the polarization and the incident angle were varied in order to evaluate the different components of the third order susceptibility tensor, χ (3) . We observed dramatic changes of sign for both, nonlinear refraction and absorption, when passing from Au to Ag and/or varying the wave length. The results accentuate the importance of the hot-electrons contribution to the nonlinear optical response at this temporal regime, when compared to inter-band and intra-band transitions contributions.",
author = "Fern{\'a}ndez-Hern{\'a}ndez, {R. C.} and R. Gleason-Villagran and C. Torres-Torres and Cheang-Wong, {J. C.} and A. Crespo-Sosa and L. Rodriguez-Fern{\'a}ndez and A. L{\'o}pez-Suarez and R. Rangel-Rojo and A. Oliver and Reyes-Esqueda, {J. A.}",
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Fernández-Hernández, RC, Gleason-Villagran, R, Torres-Torres, C, Cheang-Wong, JC, Crespo-Sosa, A, Rodriguez-Fernández, L, López-Suarez, A, Rangel-Rojo, R, Oliver, A & Reyes-Esqueda, JA 2011, 'Journal of Physics: Conference Series', Paper presented at conference, 1/01/11. https://doi.org/10.1088/1742-6596/274/1/012074

Journal of Physics: Conference Series. / Fernández-Hernández, R. C.; Gleason-Villagran, R.; Torres-Torres, C.; Cheang-Wong, J. C.; Crespo-Sosa, A.; Rodriguez-Fernández, L.; López-Suarez, A.; Rangel-Rojo, R.; Oliver, A.; Reyes-Esqueda, J. A.

2011. Paper presented at conference, .

Research output: Contribution to conferencePaper

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T1 - Journal of Physics: Conference Series

AU - Fernández-Hernández, R. C.

AU - Gleason-Villagran, R.

AU - Torres-Torres, C.

AU - Cheang-Wong, J. C.

AU - Crespo-Sosa, A.

AU - Rodriguez-Fernández, L.

AU - López-Suarez, A.

AU - Rangel-Rojo, R.

AU - Oliver, A.

AU - Reyes-Esqueda, J. A.

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AB - In this work, we studied the nonlinear absorption and refraction of isotropic and anisotropic metallic nanocomposites, which consist of Au and Ag nanoparticles (NPs) embedded in matrices of SiO 2 . We performed this study at different wavelengths using the Z-scan technique in the picosecond regime. The wavelengths were selected accordingly to the absorption spectra of the nanocomposites, choosing wavelengths into the inter- and intra-band transitions regions, including the surface plasmon (SP) resonance, as well as in the transparent region. For the anisotropic nanocomposites, the polarization and the incident angle were varied in order to evaluate the different components of the third order susceptibility tensor, χ (3) . We observed dramatic changes of sign for both, nonlinear refraction and absorption, when passing from Au to Ag and/or varying the wave length. The results accentuate the importance of the hot-electrons contribution to the nonlinear optical response at this temporal regime, when compared to inter-band and intra-band transitions contributions.

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Fernández-Hernández RC, Gleason-Villagran R, Torres-Torres C, Cheang-Wong JC, Crespo-Sosa A, Rodriguez-Fernández L et al. Journal of Physics: Conference Series. 2011. Paper presented at conference, . https://doi.org/10.1088/1742-6596/274/1/012074