固体微片激光回馈技术在远程振动测量中的研究

Study of solid-state microchip laser feedback technology in remote vibration measurement

激光回馈技术具有极高的测量灵敏度,在振动测量中具有突出的优势。在激光回馈理论和技术的基础上,研究并提出了基于激光回馈技术的远程振动测量方法,构建了完整的固体微片激光远程振动测量系统,详细分析了系统各个部分的基本结构及其工作原理,并在实验中很好地实现了不同频率振动信号的测量及恢复。该研究将振动测量的工作距离提高到25 m以上,实现了远程微振动的非接触测量,拓展了激光回馈技术的应用。实验系统具有较大的振幅与频率测量范围,在振动测量方面具有突出的性能,能够适用于多种场合和目标的振动测量需求。

The technology of laser feedback has ultra high sensitivity and great advantages in vibration measurement.Based on laser feedback theory and technologies,method of remote vibration measurement with laser feedback technologies was studied and presented.The remote vibration measurement system based on microchip solid-state laser feedback was built,the structure and working principles of each parts of the system were studied in detail.The vibration signals of different frequencies in experiments were measured and restored.The working distance of vibration measurement was improved to 25 meters,realizing non-contact measurement of remote vibration.The application of laser feedback technology was expanded.The experimental system has superior performance and large range of amplitudes and frequencies in vibration measurement,and it can be applied in various occasions and can meet various target measurement requirements.