Avidor J M
Appl Opt. 1974 Feb 1;13(2):280-5. doi: 10.1364/AO.13.000280.
A laser Doppler velocimeter capable of directly measuring instantaneous velocities is described. The new LDV uses a novel detection technique based on the utilization of a static slightly defocused spherical Fabry-Perot interferometer used in conjunction with a special mask for the detection of instantaneous Doppler frequency shifts. The essential characteristics of this LDV are discussed, and such a system recently developed is described. Results of turbulent flow measurements show good agreement with data obtained using hot wire anemometry.
本文描述了一种能够直接测量瞬时速度的激光多普勒测速仪。这种新型激光多普勒测速仪采用了一种新颖的检测技术，该技术基于利用一个静态的、稍微散焦的球面法布里-珀罗干涉仪，并结合一个特殊的掩膜来检测瞬时多普勒频移。文中讨论了这种激光多普勒测速仪的基本特性，并介绍了最近开发的这样一个系统。湍流测量结果表明，该结果与使用热线风速仪获得的数据吻合良好。
