金属镜的相位特征通过多距离相位检索.
Bowen Liu1, Jialuo Cheng2, Maoxiong Zhao3
1State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, 200433, Shanghai, China.
Light, science & applications
|August 6, 2024
概括
一个新的多距离相位检索系统准确地描述了金属的相位分布. 这种方法有助于通过分析焦距和偏差来优化metalens的设计和功能.
科学领域:
- 光学是什么?光学是什么?光学是什么?
- 材料科学 材料科学 材料科学
背景情况:
- 金属镜片提供独特的功能和物理特性,引发了大量的研究兴趣.
- 优化金属的性能需要对其相调节的准确表征.
研究的目的:
- 介绍一个新的多距离相位检索系统用于金属的表征.
- 分析系统的融合,稳定性和检索相位分布的能力.
主要方法:
- 在多距离相位检索系统中采用了光学场扫描.
- 在不同的测量噪声和扫描光场长度下评估了系统的性能.
主要成果:
- 该系统成功地检索了金属的相位分布,噪声低,扫描长度足够.
- 焦距和偏差分析是通过计算的相位分布实现的.
- 该系统确定了样本缺陷和不同工作介质 (空气,乙醇) 的变化对相调节的影响.
结论:
- 开发的系统提供了一种简单的方法,用于金属的相位特征.
- 这种技术对于优化金属的设计和提高其功能至关重要.
- 该研究证明了该系统在近红外光谱和不同介质的有效性.
相关概念视频
01:30Electronic Distance Measuring Instruments
31
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
31
01:26Phase Contrast and Differential Interference Contrast Microscopy
7.6K
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
7.6K
01:24Time and frequency -Domain Interpretation of Phase-lead Control
80
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
80