多深度聚焦激光差异干扰仪基于色态偏差的色态偏差.
Applied optics
|March 4, 2024
概括
一种改进的聚焦激光差异干扰仪 (FLDI) 使用两个波长来实现3D流分析. 这一进步保持了用于高频流体动力学研究的速度测量能力.
科学领域:
- 流体动力学 流体动力学
- 光学计量学 在光学计量学
- 基于激光的测量方法
背景情况:
- 聚焦激光差异干扰计 (FLDI) 是一种用于非侵入性流量测量的强大技术.
- 传统的FLDI设置主要适用于分析二维流.
- 需要先进的技术来捕捉复杂的三维流动力学.
研究的目的:
- 修改FLDI以进行增强的三维流量分析.
- 调查FLDI中双波长的使用,以实现测量点的空间分离.
- 在复杂的流量场景中验证修改后的FLDI系统的性能.
主要方法:
- 在FLDI设置中实现双波长干扰仪.
- 通过修改的光线痕迹计算来计算光学元件的色谱偏差.
- 实验验证使用管喷气和激光诱导的冲击波.
主要成果:
- 使用两种不同的波长在光轴上分布的相邻光束对的演示.
- 通过修改的光线追踪成功预测每个波长的焦点.
- 实验结果证实,修改后的FLDI保留了核心测速能力.
结论:
- 经过修改的FLDI系统成功实现了对三维流量的分析.
- 这种双波长方法扩大了FLDI的适用性,特别是对于高频流量内容.
- 与多点变量的集成为先进的流体动力学研究提供了进一步的潜力.
相关概念视频
Confocal Fluorescence Microscopy
13.3K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
13.3K
Phase Contrast and Differential Interference Contrast Microscopy
8.0K
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...
8.0K


