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Méndez González, Diego ; Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Laurenti, Marco ; Cabrera Granado, Eduardo ; Egatz-Gómez, Ana ; Lopez Cabarcos, Enrique ; Rubio Retama, Jorge ; Díaz García, Elena | RSC | 2019-08-07Metallic nanostructures have the potential to modify the anti-Stokes emission of upconverting nanoparticles (UCNPs) by coupling their plasmon resonance with either the excitation or the emission wavelength of the UCNPs. In this regard gold nanop[...]texto impreso
Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Laurenti, Marco ; Méndez González, Diego ; Egatz-Gómez, Ana ; Lopez Cabarcos, Enrique ; Cabrera Granado, Eduardo ; Díaz García, Elena ; Rubio Retama, Jorge | Amer Chemical Soc | 2018-05Förster resonant energy transfer (FRET) with upconverting nanoparticles (UCNPs) as donors and quantum dots (QDs) as acceptors has been regarded as a promising tool for biosensing applications. In this work, we use time-resolved fluorescence spec[...]texto impreso
Egatz-Gómez, Ana ; Gómez Calderón, Óscar ; Melle Hernández, Sonia ; Carreño Sánchez, Fernando ; Antón Revilla, Miguel Ángel ; Gort, Elske M. | Elsevier Science BV | 2013-06We study the green upconversion luminescence of Er3+ ions in an aluminosilicate optical fiber upon near infrared excitation at 787 nm. The dependence of the upconversion luminescence on temperature has been determined. As temperature drops from [...]texto impreso
Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Egatz-Gómez, Ana ; Cabrera Granado, Eduardo ; Carreño Sánchez, Fernando ; Salavagione, H. J. ; Antón Revilla, Miguel Ángel | OSA Publishing | 2014-04-08We analyze the phase shift induced in an amplitude-modulated laser beam propagating through a water dispersion of graphene oxide sheets in a fiber-to-fiber U-bench. This phase shift arises from the thermally induced nonlinear refraction in the s[...]texto impreso
Carreño Sánchez, Fernando ; Antón Revilla, Miguel Ángel ; Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Cabrera Granado, Eduardo ; Cox, Joel ; Singh, Mahi R. ; Egatz-Gómez, Ana | American Institute of Physics Publising | 2014A scheme for terahertz (THz) generation from intraband transition in a self-assembled quantum dot (QD) molecule coupled to a metallic nanoparticle (MNP) is analyzed. The QD structure is described as a three-level atom-like system using the densi[...]texto impreso
Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Antón Revilla, Miguel Ángel ; Carreño Sánchez, Fernando ; Egatz-Gómez, Ana | OSA Publishing | 2012The homogeneous linewidth of the transition I15/24?I13/24 in highly doped erbium fibers and its dependence with temperature in the range from 10 to 50 K are experimentally characterized using spectral hole burning. The homogeneous linewidth depe[...]texto impreso
Melle Hernández, Sonia ; Calderón, Oscar Gómez ; Egatz-Gómez, Ana ; Cabrera Granado, Eduardo ; Carreño Sánchez, Fernando ; Antón Revilla, Miguel Ángel | The Optical Society Of America | 2015-10-26We experimentally study the temporal dynamics of amplitude-modulated laser beams propagating through a water dispersion of graphene oxide sheets in a fiber-to-fiber U-bench. Nonlinear refraction induced in the sample by thermal effects leads to [...]
