Correction of backscatter-induced systematic errors in ring laser gyroscopes.
Correction of backscatter-induced systematic errors in ring laser gyroscopes.
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DOI：
10.1364/ao.53.007610
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发表时间：
2014-11
期刊：
影响因子：
1.9
通讯作者：
R. Hurst;N. Rabeendran;K. Schreiber;J. Wells
中科院分区：
文献类型：
--
作者：
R. Hurst;N. Rabeendran;K. Schreiber;J. Wells
在环形激光陀螺中，反向传播光束之间的后向散射耦合导致测量旋转速率的系统误差。我们表明，误差可以从分离光束的几乎独立的光频扰动。在双反向散射过程中，每个光束首先被散射到另一个光束方向，然后再散射回自身，从而产生相位和振幅扰动。分析从一个纯粹的被动环形腔，通过列入增益介质和增益饱和。旋转速率误差可以根据对向传播光束的调制来估计和校正。用真实的数据对该方法进行了验证。
In ring laser gyroscopes, backscatter coupling between the counterpropagating beams leads to systematic errors in measured rotation rates. We show the errors can be derived from the nearly independent optical frequency perturbations of the separate beams. In a process of double backscatter each beam is scattered first into the other beam direction, then rescattered back into itself, giving phase and amplitude perturbations. The analysis proceeds from a purely passive ring cavity, through inclusion of a gain medium and gain saturation. The rotation rate errors may be estimated and corrected from the modulations of the counterpropagating beams. The method is demonstrated with real data.