超大环形激光陀螺仪谐振腔参数研究  

Research on the Parameters of the Resonant Cavity of the Super-large Ring Laser Gyroscope

作　　者：全秋叶 郭文阁[1,2] 王飞 徐学东 张立松 高玉平[2] 张首刚[2] QUAN Qiu-ye;GUO Wen-ge;WANG Fei;XU Xue-dong;ZHANG Li-song;GAO Yu-ping;ZHANG Shou-gang(School of Science,Xi’ an Shiyou University,Xi’ an 710065,China;Quantum Frequency StandardLaboratory, National Time Service Center, Chinese Academy of Sciences, Xi’ an 710600,China;Hunan 208 Advanced Technology Co. , Ltd. , Changsha 410006,China)

机构地区：[1]西安石油大学理学院,陕西西安710065 [2]中国科学院国家授时中心量子频标研究室,陕西西安710600 [3]湖南二零八先进科技有限公司,湖南长沙410006

出　　处：《红外》2022年第2期44-48,共5页Infrared

摘　　要：大型激光陀螺是一种基于Sagnac效应的惯性传感器。随着尺寸的增加,基模运转和增益成为重要参数。针对镜片匹配、放电电流大小及腔长等,计算了ABCD矩阵与高斯光束的特征参数,验证了不同边长下环形谐振腔腰斑位置及放电电流对光阑的影响。实验结果表明,出光阈值处光斑质量最优,光斑最为平整,比值接近于1且对称结构有利于高效读取信号。这对大型激光陀螺腔体设计具有一定的参考意义。Large laser gyro is an inertial sensor based on Sagnac effect.As the size increases,the fundamental mode operation and gain become important parameters.Aiming at lens matching,discharge current size and cavity length,the characteristic parameters of ABCD matrix and Gaussian beam are calculated,and the influence of the waist spot position of the ring cavity and the discharge current on the diaphragm under different side lengths are verified in this paper.The results show that the quality of the light spot at the light threshold is the best.At this time the light spot is the flattest,and the ratio is close to 1.The symmetrical structure is conducive to efficient signal reading.This has certain reference significance for the cavity design of large laser gyro.

关 键 词：激光陀螺 谐振腔 腰斑半径 光学矩阵 高斯光束 

分 类 号：T-012[一般工业技术]