四频差动激光陀螺开机零漂特性研究  

Study on the Startup Null Drift Characteristic of Four-Frequency Differential Laser Gyro

作　　者：杨建强[1] 罗云[2] 廖丹[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073 [2]海军工程大学兵器工程系,湖北武汉430033

出　　处：《光学学报》2010年第6期1709-1714,共6页Acta Optica Sinica

摘　　要：四频差动激光陀螺开机零漂性能对于快速启动场合有重要价值。从开机预热过程出发,分析其物理作用机制,讨论了几种影响因素,并提出相应解决方法。如采用色散平衡技术减小零漂对稳频位置的敏感性,采用自动增益控制回路稳定光强,采用空间异面腔结构消除水晶片负性影响,采用合理的热布局设计加快热平衡过程,采用可靠性高的检测电路增强稳定性,采用相关措施削弱腔体变形等方法。实验表明,这些方法对改善开机零漂性能是有效的,对研究者有一定参考价值。The research on startup null drift performance of four-frequency differential laser gyro is very valuable to the fast startup situation.Based on the process of warming-up,physical mechanism were analyzed,some affecting factors of null drift were discussed,and then the corresponding solutions were introduced.For example,we adopt dispersion equalization technology to decrease the sensitivity of gyro drift to frequency stabilizing position,auto-gain control loop to stabilize the light intensity,space non-planar cavity structure to eliminate the effect of quartz crystal,suitable design of thermal arrangement to speed up the heat balance process,reliable detecting circuits to enhance the stability,related measures to minimize the cavity distortion and so on.Experimental results show that these solutions are effective to improve the startup null drift performance of laser gyro,which are helpful to researchers.

关 键 词：激光光学 四频差动激光陀螺 开机零漂 温度特性 

分 类 号：TN248.1[电子电信—物理电子学]