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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Control of the radiative properties via photon-plasmon interaction in Er3+-Tm3+-codoped tellurite glasses in the near infrared region

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Rivera, V. A. G. [1, 2] ; Ledemi, Y. [1] ; El-Amraoui, M. [1] ; Messaddeq, Y. [1] ; Marega, Jr., E. [2]
Total Authors: 5
[1] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1K 7P4 - Canada
[2] Univ Sao Paulo, Inst Fis Sao Carlos, INOF, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Optics Express; v. 22, n. 17, p. 21122-21136, AUG 25 2014.
Web of Science Citations: 13

The novelty of this paper is that it reports on the tuning of the spectral properties of Er3+-Tm3+ ions in tellurite glasses in the near-infrared region through the incorporation of silver or gold nanoparticles. These noble metal nanoparticles can improve the emission intensity and expand the bandwidth of the luminescence spectrum centered at 1535 nm, covering practically all the optical telecommunication bands (S, C + L and U), and extended up to 2010 nm wavelength under excitation by a 976 nm laser diode. Both effects are obtained by the combined emission of Er3+ and Tm3+ ions due to efficient energy transfer processes promoted by the presence of silver or gold nanoparticles for the (Er3+) 4I11/2 -> (Tm3+) 3H5, (Er3+) I-4(13/2) -> (Tm3+) H-3(4) and (Er3+) I-4(13/2) -> (Tm3+) F-3(4) transitions. The interactions between the electronic transitions of Er3+ and Tm3+ ions that provide a tunable emission are associated with the dynamic coupling mechanism described by the variations generated by the Hamiltonian HDC in either the oscillator strength or the local crystal field, i. e. the line shape changes in the near-infrared emission band. The Hamiltonian is expressed as eigenmodes associated with the density of the conduction electron generated by the different nanoparticles through its collective free oscillations at each resonance frequency of the nanoparticle and their geometric dependence. A complete description of photon-plasmon interactions of noble metal nanoparticles with the Er3+ and Tm3+ ions is provided. (C) 2014 Optical Society of America (AU)

FAPESP's process: 11/21293-0 - Planar waveguides for optical telecommunications from plasmonic
Grantee:Victor Anthony Garcia Rivera
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 09/08978-4 - Planar Waveguide for Telecommunications from Plasmons
Grantee:Victor Anthony Garcia Rivera
Support Opportunities: Scholarships in Brazil - Post-Doctoral