Fig. 1. As-grown Ti:MgAl₂O₄ crystal with the size of Ø30 mm × 70 mm. 尺寸为Ø30 mm × 70 mm的Ti:MgAl₂O₄晶体

Fig. 2. X-ray diffraction patterns of the as-grown Ti:MgAl₂O₄ crystal and MgAl₂O₄ standard patterns (JCPDS, no. 77-0435). Ti:MgAl₂O₄晶体的粉末衍射图和MgAl₂O₄晶体的标准谱图(JCPDS, no. 77-0435)

Fig. 3. X-ray rocking curve of (100) plane of the as-grown Ti:MgAl₂O₄ crystal. Ti:MgAl₂O₄晶体(100)面的摇摆曲线

Fig. 4. Raman spectra of the as-grown Ti:MgAl₂O₄ crystal. Ti:MgAl₂O₄晶体的拉曼谱图

Fig. 5. Transmittance spectra of the as-grown Ti:MgAl₂O₄ crystal before and after annealing in the range of 250−1200 nm. 退火前后Ti:MgAl₂O₄晶体在250−1200 nm范围内的透过光谱

Fig. 6. Emission spectra of the as-grown Ti:MgAl₂O₄ crystal before and after annealing excited by 271 nm at room temperature. 退火前后Ti:MgAl₂O₄晶体在271 nm波长激发下的室温荧光发射光谱

Fig. 7. ESR spectrum of the as-grown Ti:MgAl₂O₄ crystal before and after annealing at 130 K. Ti:MgAl₂O₄晶体在130 K时的ESR谱

Fig. 8. Excitation spectra of the as-grown Ti:MgAl₂O₄ crystal before and after annealing with 480 nm as monitoring. 退火前后Ti:MgAl₂O₄晶体480 nm发射的激发光谱

Fig. 9. Emission decay curve of the as-grown Ti:MgAl₂O₄ crystal at room temperature. 室温下Ti:MgAl₂O₄晶体的荧光衰减曲线