Durst F, Stevenson W H
Appl Opt. 1979 Feb 15;18(4):516-24. doi: 10.1364/AO.18.000516.
The unique properties of Gaussian beams must be considered when designing and using laser Doppler anemometer systems. This paper presents an analysis of Gaussian beam effects in LDA systems in order to quantify their influence on the Doppler signal. The analytical results, which are verified by experiment, show that both axial and lateral frequency gradients can exist in the probe volume of improperly aligned LDA systems. The effects of lens aberrations and of optical path changes due to the insertion of planar optical elements in the beam are also considered.
在设计和使用激光多普勒风速仪系统时，必须考虑高斯光束的独特特性。本文对激光多普勒风速仪系统中的高斯光束效应进行了分析，以便量化它们对多普勒信号的影响。经实验验证的分析结果表明，在未正确对准的激光多普勒风速仪系统的探测体积中，轴向和横向频率梯度都可能存在。还考虑了透镜像差以及由于在光束中插入平面光学元件而导致的光路变化的影响。
