We report spectroscopic properties of Tb doped phosphate glasses for green fiber laser. Absorption spectra,sta...
Liaolin Zhang,Mingying Peng,Guoping Dong,Zhongmin Yang,Jianrong Qiu~* (State Key Laboratory of Luminescence Physics and Chemistry,and Institute of Optical Communication Materials,South China University of Technology,Wushan Road 381,Guangzhou 510640,China)
We experimentally verify that surface plasmon （SP） enhances the photoluminescence （PL） of visible light from Tb3＋-doped 60SiO2-20Al2O3-20CaF2：0.3Tb3＋, 20Yb3＋ glass ceramics by using electron beam lithog- raphy 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 Tb3＋ by as much as 1.6 times is observed. The PL enhancement is mainly due to the coupling of excitation from 7F6 to 5D4 transition dipole of Tb3＋ ion with SP mode induced from the silver nanoparticles.
