Journal of Synthetic Crystals, Volume. 53, Issue 10, 1669(2024)
Growth of 2-Inch Ytterbium-Doped Calcium Niobium Gallium Garnet Single Crystal by Bridgman Method
In this paper, 4.2% ytterbium-doped calcium niobium gallium garnet (Yb∶Ca3(NbGa)5O12) crystals with diameter of 2 inch (1 inch=2.54 cm) were grown by Bridgman method. The obtained crystals were intact and free of visible defects. Crystal structure was determine by XRD, which reveals that the crystal belongs to the cubic crystal system with lattice parameters a=b=c=12.493 Å. The crystals were oriented and cut to obtain some (420) plane wafers with dimensions of 10 mm×10 mm×1 mm. These wafers were double-side polished to obtain the final samples. The performance of the samples was characterized through X-ray diffraction, ultraviolet-visible spectrophotometer, and fluorescence spectroscope. The results show that the rocking curve of the crystal has a full width at half maximum (FWHM) of 43″, and the transmittance reaches 80% in the near-infrared wavelength range. At 935 nm, FWHM of the absorption peak is 47.15 nm and absorption cross-section is 1.53×10-20 cm2. When excited with a 980 nm laser, an emission peak was observed at 1 031 nm, corresponding to the transition of Yb3+ from the excited state 2F5/2 to the ground state 2F7/2.
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ZHOU Lintao, ZHAO Tao, SUN Zhigang, JIANG Linwen, PAN Shangke, PAN Jianguo, ZHENG Yanqing. Growth of 2-Inch Ytterbium-Doped Calcium Niobium Gallium Garnet Single Crystal by Bridgman Method[J]. Journal of Synthetic Crystals, 2024, 53(10): 1669
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Received: Jun. 26, 2024
Accepted: Jan. 17, 2025
Published Online: Jan. 17, 2025
The Author Email: Yanqing ZHENG (zhengyanqing@nbu.edu.cn)
CSTR:32186.14.