Expanding broadband emission in the near-IR via energy transfer between Er3+-Tm3+ co-doped tellurite-glasses

Autor(es)

Rivera, V. A. G. ^{[1, 2]} ; El-Amraoui, Mohammed ^[1] ; Ledemi, Y. ^[1] ; Messaddeq, Y. ^[1] ; Marega, Jr., E. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1V 0A6 - Canada

^[2] Univ Sao Paulo, Inst Fis Sao Carlos INOF, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Luminescence; v. 145, p. 787-792, JAN 2014.
• Citações Web of Science: 33

Resumo

Processes of energy transfer in Er3+-Tm3+ co-doped tellurite glasses has permitted to obtain an expanding broadband emission in the near-infrared region covering the bands S, C+L and U of the optical telecommunications and extending up to the 1700-1900 nm range under excitation by a 976 nm laser diode. This widening of the emission band is achieved through an integrated emission, where the Er3+ ions act as donor and the Tm3+ ions as acceptor following the route (Er3+)I-4(11/2)->(Tm3+)H-3(5), (Er3+)I-4(13/2)->(Tm3+)H-3(4) and (Er3+)I-4(13/2)->(Tm3+)F-3(4). The relative intensity emission and lifetime of the I-4(13/2)-> I-4(15/2) transition of the Er3+ ions decrease with increasing the Tm3+ concentration. Besides, high Tm3+ concentrations produce an emission quenching for the H-3(4)-> F-3(4) and F-3(4)-> H-3(6) radiative transitions, due to cross-relaxation between Tm3+ ions. These effects are studied by means of probability and quantum yield of the energy transfer. The most intense and widest emission band is measured in the glass co-doped with 0.075 and 1 mol% of Tm2O3 and Er2O3, respectively. (C) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/21293-0 - Guias de onda planares para telecomunicações ópticas com plasmon - BEPE-PD
• Beneficiário: Victor Anthony Garcia Rivera
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 09/08978-4 - Guias de Onda Planares para Telecomunicações Ópticas com Plasmon
• Beneficiário: Victor Anthony Garcia Rivera
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado