Laser Doppler vibrometry with a single-frequency microchip green laser
Laser Doppler vibrometry with a single-frequency microchip green laser
复制标题
使用单频微芯片绿光激光器进行激光多普勒测振
DOI：
10.1088/0957-0233/22/11/115306
复制
发表时间：
2011
影响因子：
2.4
通讯作者：
K. Abramski
中科院分区：
文献类型：
--
作者：
A. Antończak;P. Kozioł;J. Sotor;P. Kaczmarek;K. Abramski
我们研制了一种基于Nd:YVO4/YVO4/KTP单片单频绿色激光器的激光测振仪，工作波长为532 nm，辐射线宽较窄。研究了激光多普勒测振仪的两种配置——即所谓的单频和双频布拉格频移。对散射光束和参考光束混合后的外差信号进行了测量。在这两种配置中，我们都获得了高信噪比>30 dB的信号，分辨率带宽= 200 kHz，振动计输出功率为3 mW。我们认为，稳定的单频固态绿色激光器为微型激光振动测量的发展提供了新的机遇。
We have developed a laser vibrometer based on an Nd:YVO4/YVO4/KTP monolithic single-frequency green laser operating at 532 nm, with a narrow linewidth of radiation. Two configurations of the laser Doppler vibrometer have been investigated—with the so-called single- and double-frequency Bragg shifts. Measurement of heterodyne signals as a mixing result of scattered and reference beams has been carried out. In both configurations we have obtained signals with a high S/N ratio of >30 dB with resolution bandwidth = 200 kHz for a vibrometer output power of 3 mW. In our opinion, stable single-frequency solid-state green lasers provide new opportunities for the development of miniature laser vibrometry.