title: [Anti-stokes blue fluorescence and stark splitting of 3H4 in Pr3+:Y2SiO5 (YSO)].
abstract: In the Pr3+ -doped Y2SiO5, the population in 1D2 of Pr3+ can be transferred to 3P0 state via non-radiative energy transfer by the laser excitation in resonance with 3H4-->1D2 , and we can experimentally study the Stark splitting of 3H4 energy level via 3P0 -->3H4 anti-Stokes emission spectra. Because the anti-Stokes emission spectra can avoid the energy transfer between different crystallographic site 1D2 energy levels, the above splitting lines attribution is more accurate than the assignment via 1D2-->3H4 Stokes spectra by the laser excitation in resonance with 3H4-->1D2. In addition, the character of the anti-Stokes fluorescence decay time was observed.
authors.affiliation: Key Laboratory for Optics and Magnetic Resonance Spectroscopy of Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China.
authors.forename: Yan-liang
authors.initials: YL
authors.lastname: Zhang
authors.forename: Zhen-rong
authors.initials: ZR
authors.lastname: Sun
authors.forename: Yu-qiong
authors.initials: YQ
authors.lastname: Li
authors.forename: Liang-en
authors.initials: LE
authors.lastname: Ding
authors.forename: Zu-geng
authors.initials: ZG
authors.lastname: Wang