Upconversion emission in a carbon-implanted Yb:YAG planar waveguide
Por:
Vázquez G.V., Desirena H., De La Rosa E., Flores-Romero E., Márquez H., Rickards J., Trejo-Luna R.
Publicada:
1 nov 2012
Resumen:
Light confinement and spectroscopic properties of a Yb:YAG planar waveguide fabricated by ion implantation were investigated. Under 970 nm excitation, cooperative upconversion and near infrared luminescence were observed. The interaction between Yb3+ ion pairs was responsible for the appearance of a blue-green band centered at 514 nm. However, several more bands in the blue, green and red regions were detected and are related to Er3+ and Tm3+ ion impurities. The upconversion emission of such ion impurities is explained in terms of an efficient energy transfer from Yb3+ to Er3+ and Tm3+ due to high Yb3+ concentration. The stimulated emission cross section for the F-2(5/2)-> F-2(7/2) transition of Yb3+ was 1.9 x 10(-20) cm(2). The fluorescence lifetime of the F-2(5/2) level and that of the blue-green band were 1.28 ms and 593 mu s respectively. The self-convolution of IR emission was calculated and the result shows that the main peak is centered at 514 nm. Such self-convolution and the f
Filiaciones:
Vázquez G.V.:
Centro de Investigaciones en Óptica, A.P. 1-948, León, Gto. 37150, Mexico
Desirena H.:
Centro de Investigaciones en Óptica, A.P. 1-948, León, Gto. 37150, Mexico
De La Rosa E.:
Centro de Investigaciones en Óptica, A.P. 1-948, León, Gto. 37150, Mexico
Flores-Romero E.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
Márquez H.:
Departamento de Óptica, CICESE, 107 Carr. Tijuana-Ensenada, 22860 Ensenada, B.C., Mexico
Rickards J.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
Trejo-Luna R.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
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