用双折射激光频率分裂原理实现的静态与动态测量方法

Static and dynamic measuring method based on birefringence laser frequency splitting principle

讨论了用双折射激光频率分裂技术原理实现的静态与动态测量方法；介绍了实验系统和实验结果。该方法具有诸多优越性，例如灵敏度高、频响范围宽、有较强的抗干扰能力和较好的线性等，尤其适用于动态测量。

Based on birefringence laser frequency splitting principle.This paper introduced the experimental system for static and dynamic measurements.The static measurements include the angle detection with 0.3″ angle precision and the displacement detection with 10nm resolution.The dynamic detection can be utilize for detecting of the vibration frequency and amplitude with 15nm resolution at the range of 0.1 Hz～8kHz.The method has many advantages:higher sensitivity,wide frequency response range and good linearity.