title: [Optical parameters of Er3+ in Er3+ : YVO4].
abstract: In the present paper the authors firstly measured the absorption spectra of Er3+ in the sample Er3+ : YVO4 (0.5%), then calculated the intensity parameters are calculated by using the Judd-Ofelt theory. After that the authors dealed with some predicted spectroscopic parameters, such as the oscillator strength, spontaneous radiative transition rate, branching ratio and integrated emission cross section. And Er : YVO4 crystal application value has been analyzed with the optical parameters. Especially there are large oscillator strengths and large integrated emission cross sections in the transitions of 4 I1/2 --> 4 I15/2, 2 H11/2 --> 4I15/2, 4S3/2 --> 4 I15/2, and 4F9/2 --> 4 I15/2. So, they are more worth of attention. Moreover, by comparing the Er-doped yttrium vanadate crystal and other Er-doped crystal optical properties, the authors can see the advantages of YVO4 as laser crystal. Finally, the authors discussed the splitting of the energy levels of Er3+ in the crystal YVO4 based on the group theory.
authors.affiliation: Applied Optics Beijing Area Major Laboratory, Department of Physics, Analytical and Testing Center, Beijing Normal University, Beijing 100875, China. xtxyz100@163.com
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Xiao-bo
authors.initials: XB
authors.lastname: Chen
authors.forename: Luan
authors.initials: L
authors.lastname: Chen
authors.forename: Da-he
authors.initials: DH
authors.lastname: Liu
authors.forename: Zeng-fu
authors.initials: ZF
authors.lastname: Song
authors.forename: Yong-liang
authors.initials: YL
authors.lastname: Li
authors.forename: Song
authors.initials: S
authors.lastname: Li
authors.forename: Yong-zhi
authors.initials: YZ
authors.lastname: Zeng
authors.forename: Zheng-long
authors.initials: ZL
authors.lastname: Wu
authors.forename: Chun-lin
authors.initials: CL
authors.lastname: Zhang
authors.forename: Ya-fei
authors.initials: YF
authors.lastname: Wang
authors.forename: Jing-hua
authors.initials: JH
authors.lastname: Guo