Three-photon-excited Upconversion Luminescence of Tb3+-doped SrO-TiO2-SiO2 Glass by Infrared Femtosecond Laser Irradiation
We report on near infrared to visible upconversion luminescence in Tb3+ -doped StO-TiO2-SiO2 glass excited at 800 am by using femtosecond laser irradiation. The luminescence spectra of the glass are similar for femtosecond laser irradiation and excitation at 267 nm with a Xe lamp. The upconversion luminescence can be assigned to 5D3→7F4 and 5D4→7FJ(J = 6, 5, 4, 3) transitions of Tb3 +. The relationship between the emission intensity of Tb3+ and the pump power indicates that a three-photon simultaneous absorption process is dominant in the conversion of infrared to the green luminescence. We suggest that the simultaneous absorption of three infrared photons promotes the Tb3+ to excited states, which quickly cascade down to lower excited states, and radiatively relax to terminal states, resulting in the characteristic fluorescence of Tb3+. This has promising applications in three dimensional display, visible lasers and high-resolution optical data storage.
Three-dimensional Image Multiphoton Processes Fluorescent and Luminescent Materials Glass and Other Amorphous Material.
Bin Zhu Songmin Zhang Shifeng Zhou Jiancan Yu Wei Zeng Jianrong Qiu
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
国际会议
上海
英文
1067-1070
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）