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Updated: May 15, 2025

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BaF₂的光学和介电性质:(Er,Yb) 联合化晶体

Marius Stef¹, Carla Schornig¹, Gabriel Buse²

¹Faculty of Physics, West University of Timisoara, Bd. V. Parvan 4, 300223 Timisoara, Romania.

Materials (Basel, Switzerland)

|May 14, 2025

概括

配合和的化晶体表现出强烈的发光和合适的介电性质. 这些先进的光子材料显示出未来光学和介电应用的前景.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
光子学是一个光子学.

背景情况:

化 (BaF2) 是用于稀土兴奋剂的有希望的宿主材料.
与埃尔 (Er3+) 和伊特尔 (Yb3+) 联合使用可增强光学性能.
了解介电性质对于光子设备集成至关重要.

研究的目的:

为了生长和表征Er3+,Yb3+联合合的BaF2单晶.
为了研究光学发射和介电松行为.
评估材料是否适用于先进的光子应用.

主要方法:

垂直布里奇曼技术用于晶体生长.
对光强度参数进行Judd-Ofelt分析.
紫外线和近紫外线光谱用于排放研究.
介电光谱用于放松过程的识别.

主要成果:

贾德-奥菲尔特分析显示了强烈的辐射过渡 (Ω2=0.59, Ω4=0.38, Ω6=0.27 ×10−20厘米2; χ=1.41).
在321,405,518和536纳米处观察到的辐射,其辐射寿命为1.13.4 ms.
确定了一种具有0.58 eV激活能量的介电松过程,归因于三角形NNN双极体 (~2.5 × 10^18 cm−3).

结论:

Er3+,Yb3+联合合的BaF2晶体具有有利的光学和介电特性.
该材料显示了发光器件的潜力.
鉴定到的介电性质表明可用于先进的介电和光子系统.

关键词:

埃尔比乌姆 (erbium) 是一种元素.化物晶体中的化物发光效应的发光效应光学光谱学是指光学光谱学.

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