概括
这项研究介绍了一种安全且实用的全息振动测量系统,使用氧化 (BSO) 晶体. 该系统准确地测量多个方向的高频,亚微米振动,无需外部电场.
科学领域:
- 光学和光子学 在光学和光子学.
- 振动分析 振动分析
- 材料科学 材料科学 材料科学
背景情况:
- 传统的振动测量系统可能很复杂,并带来安全风险.
- 高频振动检测需要敏感和准确的方法.
研究的目的:
- 开发和验证一个动态全息振动测量系统.
- 为了能够同时测量平面内和平面外的振动.
- 为了实现振动信号的敏感和线性解调.
主要方法:
- 采用氧化 (BSO) 光折射晶体对全息系统的理论和实验研究.
- 使用无外部电场的扩散模式操作.
- 调整参考束的偏振,以引入 π/2 的相位转移,以提高灵敏度.
主要成果:
- 该系统成功地以次微米准确度测量高频 (MHz级) 振动.
- 证明了同时测量平面内和平面外振动.
- 与高压漂移模式运行相比,确认了系统的实用性,安全性和卓越性能.
结论:
- 开发的全息系统为动态振动测量提供了一种安全有效的方法.
- 该系统的灵敏度和准确性适用于检测微妙的高频运动.
- 进一步分析发现了影响测量灵敏度的因素.
相关概念视频
02:18X-ray Crystallography
23.8K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
23.8K
01:25IR Spectrometers
1.1K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
1.1K