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
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons
(310.6188) Thin films : Spectral properties
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering
Optics at Surfaces
Gang Bi, Li Wang, Wei Xiong, Kosi Ueno, Hiroaki Misawa, and Jianrong Qiu, "Photoluminescence enhancement induced from silver nanoparticles in Tb3+-doped glass ceramics," Chin. Opt. Lett. 10, 092401-092401 (2012)