Abstract

We experimentally verify that surface plasmon (SP) enhances the photoluminescence (PL) of visible light from Tb<sup>3+</sup>-doped 60SiO<sub>2</sub>-20Al<sub>2</sub>O<sub>3</sub>-20CaF<sub>2</sub>:0.3Tb<sup>3+</sup>, 20Yb<sup>3+</sup> glass ceramics by using electron beam lithography to fabricate silver nanoparticles on the surface of the glass ceramics. Numerical calculation for the SP enhancement spectroscopy is achieved by using the finite-difference time-domain algorithm. A PL enhancement of Tb<sup>3+</sup> by as much as 1.6 times is observed. The PL enhancement is mainly due to the coupling of excitation from <sup>7</sup>F<sub>6</sub> to <sup>5</sup>D<sub>4</sub> transition dipole of Tb<sup>3+</sup> ion with SP mode induced from the silver nanoparticles.

© 2012 Chinese Optics Letters

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