Photoluminescence enhancement induced from silver nanoparticles in Tb3+-doped glass ceramics

We experimentally verify that surface plasmon (SP) enhances the photoluminescence (PL) of visible light from Tb 3+ -doped 60SiO2-20Al2O3-20CaF2:0.3Tb 3+ , 20Yb 3+ 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 3+ by as much as 1.6 times is observed.The PL enhancement is mainly due to the coupling of excitation from 7 F6 to 5 D4 transition dipole of Tb 3+ ion with SP mode induced from the silver nanoparticles.