相关实验视频
Updated: May 17, 2026

11:57
Fabricating Metamaterials Using the Fiber Drawing Method
Published on: October 18, 2012
14.3K
宽带可变光束分离器是由子波长厚的元材料制成的
Yasuhiro Tamayama1, Yugo Shibata1
1Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
Nanophotonics (Berlin, Germany)
|December 22, 2025
概括
我们介绍了一种创新的方法,用于使用薄型元材料创建宽带可变光束分割器. 这种设计允许通过调整元原子排列来控制光分裂比率,从而实现紧的电磁波操纵.
科学领域:
- 超材料和纳米光子学
- 电磁学和光学 电磁学和光学
- 波浪操纵波浪操纵的使用方法
背景情况:
- 超材料由于其子波长结构,具有独特的电磁性质.
- 控制光分裂比对于光学系统至关重要.
- 现有的光束分割器往往缺乏宽带调整性或紧性.
研究的目的:
- 提出并验证设计宽带可变光束分割器的方法.
- 为了证明对使用元材料的反射率与传导率的控制.
- 为了实现频率独立的光束分裂在广泛的光谱范围.
主要方法:
- 单层共振元材料的理论分析.
- 数字模拟用于验证设计原则.
- 研究元原子空间布局对光学响应的影响.
主要成果:
- 通过改变元原子的排列,证明了对反射率与传导率的控制.
- 验证了使用亚波长元材料的宽带可变光束分割器的设计.
- 展示了频率独立光束在广泛光谱中分裂的潜力.
结论:
- 拟议的方法允许设计紧的宽带可变光束分割器.
- 超材料的空间布局是调整光束分裂的一个关键参数.
- 这些发现提升了电磁波分裂和组合的技术.
相关概念视频
UV–Vis Spectrometers
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...
Atomic Absorption Spectroscopy: Instrumentation
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
The atomizer used in AAS can be either a flame atomizer or an...

