Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7922877 | Materials Chemistry and Physics | 2015 | 6 Pages |
Abstract
New mixed crystal of Yb: Y0.78Lu0.22VO4 with Yb ion concentration of 0.3 at% was grown by Czochralski method. Transmission synchrotron X-ray topography implies that this mixed crystal follows a rotational growth pattern. Crystal structure of this crystal was determined by X-ray diffraction. It showed that this crystal possesses a tetragonal zircon structure (ZrSiO4, space group I41/amd), as YVO4 and LuVO4 do. Thermal properties of this crystal were characterized by measuring its specific heat, thermal expansion coefficients and thermal conductivities. The specific heat was determined to be 0.500 J gâ1 Kâ1 at 293 K. The average linear thermal expansion coefficients were calculated to be α11 = 1.73 Ã 10â6 Kâ1 and α33 = 9.43 Ã 10â6 Kâ1, over the temperature range of 300-777 K. The thermal conductivities were calculated to be κ11 = 5.47 W mâ1 Kâ1 and κ33 = 6.64 W mâ1 Kâ1 at 303 K. Continuous-wave (cw) laser test on Yb: Y0.78Lu0.22VO4 was conducted at room temperature in the wavelength range of 1035.7-1048.3 nm, and a 13.5% optical-to-optical efficiency was achieved. The good thermal properties of Yb:Y0.78Lu0.22VO4 mixed crystal and its attractive cw laser performance make it very suitable for practical applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Degao Zhong, Bing Teng, Weijin Kong, Jianhong Li, Shiming Zhang, Yuyi Li, Lifeng Cao, Liting Yang, Linxiang He, Wanxia Huang,