不同直径Cr∶Al2O3圆柱晶体的制备及其光学性能研究

人工晶体学报 ›› 2023, Vol. 52 ›› Issue (7): 1364-1370.

• 其他激光与非线性光学晶体 • 上一篇下一篇

不同直径Cr∶Al₂O₃圆柱晶体的制备及其光学性能研究

陶争, 伍志业, 娄佳明, 王威廉, 张宇欣, 邓勇, 邓文

广西大学物理科学与工程技术学院,南宁 530004

收稿日期:2023-03-05 出版日期:2023-07-15 发布日期:2023-08-16
通信作者: 邓文,博士,教授。E-mail:wdeng@gxu.edu.cnn
作者简介:陶争(2001—) ,男,湖南省人。E-mail:3213016641@qq.com
基金资助:
大学生创新项目(202110593080);国家自然科学基金(12175047)

Preparation and Optical Properties of Cylindrical Cr∶Al₂O₃ Crystals with Different Diameters

TAO Zheng, WU Zhiye, LOU Jiaming, WANG Weilian, ZHANG Yuxin, DENG Yong, DENG Wen

School of Physical Science and Technology, Guangxi University, Nanning 530004, China

Received:2023-03-05 Online:2023-07-15 Published:2023-08-16

摘要/Abstract

摘要： 采用光学浮区法制备了不同Cr³⁺掺杂浓度的Cr∶Al₂O₃晶体,并根据需要制备了不同直径(2 mm至13 mm)的长度大于100 mm的圆柱状Cr∶Al₂O₃晶体。测量了在制备Cr∶Al₂O₃晶体不同阶段所获得的粉末料棒、陶瓷料棒和晶体的密度,分别为0.928、2.230和4.051 g/cm³。XRD图谱显示,Cr∶Al₂O₃晶体为α-Al₂O₃相。透射光谱表明,Cr∶Al₂O₃晶体可见光非特征吸收波段透过率大于80%。吸收光谱和光致激发光谱(监测669 nm 光)均显示,Cr∶Al₂O₃晶体在418及559 nm处有较强吸收带,分别对应Cr³⁺从⁴A₂至⁴T₁和从⁴A₂至⁴T₂的跃迁。以波长为559 nm的光激发Cr∶Al₂O₃晶体,其光致发射谱在669 nm处出现较强的发射峰;当Cr³⁺浓度较低时,发射峰强度随 Cr³⁺浓度的增加而增强,Cr_{0.006 0}Al_{1.994 0}O₃的发射强度达到最大,然后随 Cr³⁺浓度增加而降低。

关键词: Cr∶Al₂O₃, 光学浮区法, 光学性能, 透射光谱, 吸收光谱, 光致激发光谱, 光致发射光谱

Abstract: Cr∶Al₂O₃ crystals with different Cr³⁺ concentrations were prepared by optical floating zone method, and cylindrical Cr∶Al₂O₃ crystals with different diameters (2 mm to 13 mm) and lengths greater than 100 mm were prepared. The densities of powder rods, ceramic rods and crystals obtained at different stages of Cr∶Al₂O₃ crystal preparation are measured to be 0.928, 2.230 and 4.051 g/cm³, respectively. XRD patterns show that Cr∶Al₂O₃ crystal is α-Al₂O₃ phase. The transmission spectra show that the transmittance of Cr∶Al₂O₃ crystal in visible light non-characteristic absorption band is more than 80%. The absorption spectra and photoluminescence excitation (PLE) spectra (monitoring 669 nm light) show that there are strong absorption bands at 418 and 559 nm, corresponding to the transitions of Cr³⁺ from ⁴A₂ to ⁴T₁and from ⁴A₂ to ⁴T₂, respectively. Under the excitation of light with a wavelength of 559 nm, the photoluminescence (PL) spectra of Cr∶Al₂O₃ crystals show a strong emission peak at 669 nm. At low Cr³⁺ concentration, the intensities of the peaks increase with Cr³⁺ concentration increasing, and reach the maximum value in Cr_{0.006 0}Al_{1.994 0}O₃ crystal, and then decrease with the increase of Cr³⁺ concentration.

Key words: Cr∶Al₂O₃, optical floating zone method, optical property, transmission spectrum, absorption spectrum, photoluminescence excitation spectrum, photoluminescence spectrum

中图分类号:

O734

陶争, 伍志业, 娄佳明, 王威廉, 张宇欣, 邓勇, 邓文. 不同直径Cr∶Al₂O₃圆柱晶体的制备及其光学性能研究[J]. 人工晶体学报, 2023, 52(7): 1364-1370.

TAO Zheng, WU Zhiye, LOU Jiaming, WANG Weilian, ZHANG Yuxin, DENG Yong, DENG Wen. Preparation and Optical Properties of Cylindrical Cr∶Al₂O₃ Crystals with Different Diameters[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(7): 1364-1370.

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不同直径Cr∶Al₂O₃圆柱晶体的制备及其光学性能研究

Preparation and Optical Properties of Cylindrical Cr∶Al₂O₃ Crystals with Different Diameters

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