title: Effects of Yb concentration on the spectroscopic properties of Yb: Y3Al5O12.
abstract: Yb:YAG single crystals with Yb doping concentration 5.4, 16.3, 27.1, 53.6, and 100 at.% were grown by the Czochralski process. The effects of Yb concentration on the absorption spectra (190-1100 nm), fluorescence spectra under 940 nm and X-ray excitation were studied. The concentration quenching of fluorescence was observed when the Yb doping concentration reaches to as high as 27.1at.% for Yb:YAG. Under 940 nm excitation, the influence of the self-absorption at 969 and 1029 nm on the fluorescence spectra is not evident when the Yb doping concentration is as high as 27.1at.%. However, it can greatly change the shape of fluorescence spectra of Yb:YAG when the Yb doping concentration reaches to above 53.6 at.%.
authors.affiliation: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Qinghe Road 390, P.O. Box 800-211, Shanghai 201800, PR China.
authors.forename: Xiaodan
authors.initials: X
authors.lastname: Wang
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Xu
authors.forename: Xionghui
authors.initials: X
authors.lastname: Zeng
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Zhao
authors.forename: Benxue
authors.initials: B
authors.lastname: Jiang
authors.forename: Xiaoming
authors.initials: X
authors.lastname: He
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D003460:Crystallization; D013050:Spectrometry, Fluorescence; D015018:Ytterbium / Q000032:analysis*; D015019:Yttrium / Q000737:chemistry*
chemical_list: C503779:yttrium-aluminum-garnet; D015019:Yttrium; D000535:Aluminum; D015018:Ytterbium