材料科学
激光器
Crystal(编程语言)
半最大全宽
拉曼光谱
吸收(声学)
光学
发射光谱
吸收光谱法
光电子学
分析化学(期刊)
荧光
光致发光
谱线
化学
物理
色谱法
天文
计算机科学
复合材料
程序设计语言
作者
Mengdi Fan,Guangda Wu,Xiulan Duan,Yanlu Li,Wang Chun,Fapeng Yu,Xian Zhao
标识
DOI:10.1021/acsami.3c10468
摘要
Laser crystals with multiwavelength emission characteristics are potential light sources for terahertz radiation. Herein, the pure and Nd-doped Bi2Ti2O7 (BTO) laser crystals with sizes up to 16 × 13 × 5 mm3 were successfully grown using the flux method in the KF-B2O3–CaBi4Ti4O15 growth system. The crystal structure, ideal morphology, chemical, mechanical, and thermal properties, optical transmission and Raman spectra, refractive index, absorption, and fluorescence spectra, as well as fluorescence lifetimes, were systematically studied. Besides, the spectral parameters of Nd3+ ions in the BTO crystal were systematically calculated based on the Judd–Ofelt theory. The Nd:BTO crystal has a wide transmittance range (0.44–7.30 μm), a small coefficient of thermal expansion (5.80 × 10–6 K–1), and a large absorption full width at half-maximum (fwhm) (31.2 nm) at around ∼804 nm, making it more potential for use in high-power laser systems. Moreover, fluorescence spectra show four emission peaks at 1054, 1062, 1104, and 1112 nm. The strong multiwavelength emission property makes Nd:BTO a promising laser crystal, serving as a potential light source for terahertz radiation.
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