title: [The up-conversion of frequency in Yb3+ :KGd(WO4)2 material].
abstract: By using the method of solid phase synthesis, a series of samples of KYbxGd(1 - x) (WO4)2 with different Yb3+ mole fraction of x = 0.03, 0.08, 0.10, 0.12, 0.15, 0.18, 0.20, 0.25, 0.28, respectively were synthesized when they were heated at 1,000 degrees C. Their fluorescence spectra were measured by using LD with a wavelength of 980 nm as the pumping source and RF-540 fluorescence spectrum measurement device. The weak fluorescence at 1,020 nm and strong blue fluorescence at 476 nm were obtained. Also, the relationship between the Yb3+ doping mole fraction and the fluorescence intensity at 476 nm was measured. The result indicates that the intensity of blue fluorescence increases rapidly with the increase of Yb3+ doping mole fraction and reaches the highest point at the Yb3+ doping mole fraction of 25%, then drops quickly with the increase of Yb3+ doping mole fraction. The result also indicates that the fluorescence intensity at 1,020 nm reaches the highest point when the Yb3+ doping mole fraction is about 8%-10%.
authors.affiliation: Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
authors.forename: Chao-yang
authors.initials: CY
authors.lastname: Tu
authors.forename: Jian-fu
authors.initials: JF
authors.lastname: Li
authors.forename: Zhao-jie
authors.initials: ZJ
authors.lastname: Zhu
authors.forename: Jian-ming
authors.initials: JM
authors.lastname: Lin
mesh_terms: D005453:Fluorescence; D005682:Gadolinium / Q000737:chemistry*; D049449:Luminescence; D009942:Organometallic Compounds / Q000737:chemistry; D011188:Potassium / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D014414:Tungsten / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D005682:Gadolinium; D015018:Ytterbium; D011188:Potassium; D014414:Tungsten