水晶片线双折射对四频差动激光陀螺的影响  

Linear Birefringence of Quartz Crystal and its Effect on Four Mode Differential Laser Gyros

作　　者：周崐[1] 李佳佳[2] 

机构地区：[1]海军装备部驻武汉地区军事代表局,湖北武汉430064 [2]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《科技创新导报》2015年第35期106-108,111,共4页Science and Technology Innovation Herald

摘　　要：为了研究温度变化时水晶双折射对四频差动激光陀螺的影响机制,根据谐振腔元件性质,建立了谐振腔的琼斯矩阵模型。通过求解谐振腔琼斯矩阵的本征值和本征矢量,可得谐振腔本征模的偏振性质。利用激光理论的经典理论公式,讨论了左、右旋模式差分损耗变化对四频激光陀螺零漂的影响。分析表明,左、右旋差分损耗可以通过稳频点变化和增益介质的色散效应给陀螺带来零漂。In order to investigate the error mechanism for four mode diffcrential laser gyros caused by quartz crystal＇s birefringcnce,we establish the Jones Matrix model for the cavity.The cavity＇s Jones Matrix can give thc polarization characteristics of modes in the cavity. With the formulas of classical laser theory,the papcr discusscs null drift causcd by variation of loss diffcrcncc between left circularly polarized and right circularly polarized modcs.Shift of frequency stabilization point and dispersion of gain medium arc the two main error mechanism caused by loss difference hetwccn left circularly polarized and right circularly polarized modes.

关 键 词：四频差动激光陀螺 零漂 双折射 水晶 琼斯矩阵 差分损耗 

分 类 号：V241.558[航空宇航科学与技术—飞行器设计]