Article

Applied Physics B

, Volume 94, Issue 2, pp 239-242

Energy transfer and frequency upconversion in Yb3+–Er3+-doped PbO-GeO2 glass containing silver nanoparticles

  • L. R. P. KassabAffiliated withLaboratório de Vidros e Datações da FATEC-SP, CEETEPS/UNESP
  • , F. A. BomfimAffiliated withCentro de Ciências e Tecnologia de Materiais—IPEN
  • , J. R. MartinelliAffiliated withCentro de Ciências e Tecnologia de Materiais—IPEN
  • , N. U. WetterAffiliated withCentro de Lasers e Aplicações—IPEN
  • , J. J. NetoAffiliated withCentro de Lasers e Aplicações—IPEN
  • , Cid B. de AraújoAffiliated withDepartamento de Física, Universidade Federal de Pernambuco Email author 

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Abstract

We report the infrared-to-visible frequency upconversion in Er3+–Yb3+-codoped PbO-GeO2 glass containing silver nanoparticles (NPs). The optical excitation is made with a laser at 980 nm in resonance with the 2F5/22F7/2 transition of Yb3+ ions. Intense emission bands centered at 525, 550, and 662 nm were observed corresponding to Er3+ transitions. The simultaneous influence of the Yb3+→Er3+ energy transfer and the contribution of the intensified local field effect due to the silver NPs give origin to the enhancement of the whole frequency upconversion spectra.

PACS

42.70.Ce 78.55.-m 78.55.Qr 78.90.+t 81.05.Pj