相关实验视频
Updated: May 2, 2026

09:23
Harmonic Nanoparticles for Regenerative Research
Published on: May 1, 2014
11.3K
在嵌入SiOx矩阵中的纳米晶体中,电场诱导的第二和生成
Optics express
|April 12, 2025
概括
氧化 (SiOx) 薄膜在回火后表现出电压可控制的第二阶非线性和增强的第三阶非线性. 增加的折射率,而不是纳米晶体,增强非线性光学特性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 非线性光学是非线性光学.
背景情况:
- 增强等离子体化学蒸汽沉积 (PECVD) 用于制造氧 (SiOx) 薄膜.
- 在1100°C的化过程中,这些薄膜中会形成纳米晶体.
- 非线性光学特性对于先进的光子应用至关重要.
研究的目的:
- 为了研究SiOx薄膜的非线性光学特性,有和没有纳米晶体.
- 评估和材料组成对第二阶段和第三阶段非线性质的影响.
- 为了确定纳米晶与折射率对观察到的非线性效应的贡献.
主要方法:
- 使用PECVD的SiOx薄膜的沉积.
- 在1100°C的化处理中形成纳米晶体.
- 在1030nm波长的自由空间电场诱导的第二波 (EFISH) 测量.
主要成果:
- 实现了电压可控制的第二阶非线性 (χ(2)),与KDP相比.
- 在回火后,观察到第三阶非线性 (χ(3) 增加了一次数量级.
- 在具有最高折射率的电影中,最大化 χ3) 达到2.9 × 10-20 m2 V-2.
- 纳米晶没有显著影响第三阶非线性;反而影响了折射率的增加.
结论:
- 化SiOx膜表现出显著的非线性光学反应.
- 第三阶非线性因和材料组成,特别是折射率,而大大增强.
- 该研究突出了针对非线性光学应用的定制SiOx膜的潜力.
相关概念视频
Induced Electric Fields
3.9K
The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
3.9K
Induced Electric Fields: Applications
2.7K
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
2.7K

