Bruce R A, Fitzpatrick G L
Appl Opt. 1975 Jul 1;14(7):1621-6. doi: 10.1364/AO.14.001621.
A He-Ne laser interferometer employing a focusing telescope is used remotely to measure transient longitudinal displacements of rough surfaces by monitoring the resulting Doppler shift of the backscattered light. The feasibility and accuracy of this technique are considered theoretically relative to laser output, range, telescope aperture, sensor efficiency, bandwidth, noise, surface characteristics, and coherence. The technique was successfully demonstrated on various test surfaces at distances up to 100 m using an unstabilized 4-mW laser, a 15-cm reflector telescope, and a PIN photodiode.
一种采用聚焦望远镜的氦氖激光干涉仪被用于远程测量粗糙表面的瞬态纵向位移，通过监测后向散射光产生的多普勒频移来实现。从激光输出、测量范围、望远镜孔径、传感器效率、带宽、噪声、表面特性和相干性等方面，从理论上考虑了该技术的可行性和准确性。使用一台未稳频的4毫瓦激光器、一台15厘米反射望远镜和一个PIN光电二极管，在距离达100米的各种测试表面上成功演示了该技术。
