author = "{Sousa D. F.} and Sampaio, J. A. and Nunes, L. A. O. and Baesso, 
                         M. L. and Bento, A. C. and Miranda, Luiz Carlos Moura",
          affiliation = "{Universidade de Sao Paulo} and Instituto de Fisica, Universidade 
                         Estadual Maringa, Departamento de Fisica",
                title = "Energy transfer and the 2.8-mu m emission of Er3+- and Yb3+-doped 
                         low silica content calcium aluminate",
              journal = "Physical Review E",
                 year = "2000",
               volume = "62",
               number = "5",
                pages = "3176--3180",
                month = "Aug.",
             abstract = "The 2.8-mu m emission of Er3+-doped low silica content calcium 
                         aluminate glasses sensitized by Yb3+ is investigated using 
                         conventional spectroscopy. The experimental data are 
                         quantitatively analyzed in terms of the energy transfer among the 
                         Yb3+ and Er3+ ions. The energy transfer rate by dipole-quadrupole 
                         mechanism was inferred to be larger than by dipole-dipole 
                         mechanism. Using the Dexter model of energy transfer, the 
                         microscopic parameters of energy transfer by dipole-dipole 
                         mechanism were calculated. It was found that the Yb3+--> Er3+ 
                         energy transfer constant is 2.6 times greater than the back-energy 
                 issn = "1539-3755",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
           targetfile = "sousa_energy.pdf",
        urlaccessdate = "2020, Sep. 28"