旋转矢量法分析背向散射光对异面腔激光陀螺锁区阈值的影响  

INFLUENCE OF BACKSCATTERING LIGHT ON THE LOCKING THRESHOLD OF NONPLANAR RING RESONATOR LASER GYRO IS ANALYZED BY ROTATING VECTOR METHOD

作　　者：李东[1] 刘凌沂 李佩洋 温丹丹 LI Dong;LIU Lingyi;LI Peiyang;WEN Dandan(School of Physical Science and Technology,Northwestern Polytechnical University,Xi'an,Shaanxi 710129)

机构地区：[1]西北工业大学物理科学与技术学院,陕西西安710129

出　　处：《物理与工程》2024年第6期27-31,共5页Physics and Engineering

基　　金：2023年度陕西高等教育教学改革研究重点项目(23BZ005);2023年度西北工业大学教育教学改革研究重点委托项目(2023JGWZ09);国家自然科学基金项目(61975165)。

摘　　要：本文以旋转矢量法为基础,结合异面谐振腔中本征模式的耦合规律及图像旋转特性,推导得到了异面环形激光谐振腔中背向散射光所引起的锁区阈值表达式,研究了异面腔结构参数对于背向散射光及锁区阈值的影响。在左、右旋分量锁区同步变化情况下,实现了通过调控异面腔折叠角α来减小并消除锁区的目的。本文所得结果说明了旋转矢量法分析背向散射光对异面腔激光陀螺锁区阈值的便捷性和准确性。Based on the rotation vector method,this paper combines the coupling rule and the image rotation property of the eigenmode in nonplanar ring resonator to derive expression for the lock region threshold caused by the backscattering light in a nonplanar ring laser resonator and investigate the influence of nonplanar cavity structural parameters on backscattering light and its impact on the lock region threshold.Under the condition that the lock region of lefthand and right-hand components changes synchronously,the objective of reducing and eliminating the lock region is achieved by adjusting the nonplanar cavity folding angleαof the different plane cavity.The results obtained in this paper demonstrate the convenience and accuracy of using the rotation vector method to analyze the threshold of backscattering light on the locked area of nonplanar laser gyro.

关 键 词：旋转矢量法 异面环形谐振腔 背向散射 锁区阈值 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]