摘要
设计了一款可在实验室供学生演示和学习激光多普勒效应的实验装置。激光多普勒实验装置利用分立的光学元件搭建迈克耳孙干涉光路,干涉光路中采用两束具有频差的激光束平行叠加形成光拍来实现激光多普勒效应的演示,在Matlab环境下利用时频分析工具对差频信号进行分析,开发了基于激光多普勒效应的振动测量系统。
An experimental device is designed for students to demonstrate and study the laser Doppler effect in the laboratory. For the laser Doppler experimental device, the discrete optical elements are used to establish the Michelson interference optical path. In the interference light path, two laser beams with frequency differences are parallelty superimposed to form the optical beat to realize the demonstration of laser Doppler effect. In the Matlab environment, the differential frequency signal is analyzed by the time-frequency analysis tool and a vibration measurement system based on laser Doppler effect is developed.
出处
《实验技术与管理》
CAS
北大核心
2017年第3期64-67,96,共5页
Experimental Technology and Management
基金
国家自然科学基金青年项目(51505156)
华南农业大学2015校级教学质量工程项目(BKJX2015047)资助
关键词
多普勒效应
时频分析
光拍
Doppler effect
time-frequency analysis
optical beat
