棱镜式激光陀螺双纵模自偏频现象研究

doi:10.3969/j.issn.1000-1093.2017.06.010

兵工学报 ›› 2017, Vol. 38 ›› Issue (6): 1113-1119.doi: 10.3969/j.issn.1000-1093.2017.06.010

棱镜式激光陀螺双纵模自偏频现象研究

刘健宁¹, 焦明星¹, 马家君², 连天虹¹, 任莉娜¹

(1.西安理工大学机械与精密仪器工程学院，陕西西安 710048; 2.贵州大学大数据与信息工程学院，贵州贵阳 550025)

收稿日期:2016-11-11 修回日期:2016-11-11 上线日期:2017-12-15
作者简介:刘健宁（1985—），男，讲师，博士。E-mail：liujianning@xaut.edu.cn
基金资助:
国家自然科学基金项目(61605156、61605153)；陕西省科技厅自然科学基础研究计划项目（2016JQ6073）；陕西省教育厅科学研究计划专项项目（16JK1560）

Study of the Double Longitudinal Mode Operation and the Self-biasing Phenomenon in Prism Laser Gyro

LIU Jian-ning¹, JIAO Ming-xing¹, MA Jia-jun², LIAN Tian-hong¹， REN Li-na¹

(1.School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China;2.College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, Guizhou, China)

Received:2016-11-11 Revised:2016-11-11 Online:2017-12-15

摘要/Abstract

摘要： 棱镜式激光陀螺处在特殊的双纵模四频振荡状态下，陀螺可以无偏频地检测出地球自转角速度的天向分量，此时闭锁消失，陀螺处于自偏频状态。设计了基于气体密度和折射率控制的棱镜式环形谐振腔模态控制系统，在此基础上搭建自偏频实验平台。实验得出陀螺在自偏频状态下，两纵模的振荡频率位置处在增益曲线两侧，强、弱模式振荡强度之比约为1.4∶1.0等特点。根据激光半经典兰姆理论，建立了激光陀螺双纵模自偏频物理模型，进而推导得出弱模的频率推斥效应是产生自偏频效应的主要因素。此研究成果将为研制新体制自偏频激光陀螺提供参考。

关键词: 兵器科学与技术, 激光陀螺, 环形谐振腔, 双纵模振荡, 自偏频

Abstract: When laser gyro with prisms operates in a specific double longitudinal modes and four frequency oscillation state. it can detect the normal component of the earth’s rotation angular velocity without offset frequency, the locking disappears, and the gyro is at the self-biasing state. A mode state control system of the prism ring laser cavity is designed based on the gas density and the refractive index controlling. On this basis, a self-biasing experimental platform is established. The characteristics of self-biasing are obtained from experiments: the two longitudinal modes oscillate in both sides of gain curve, the oscillation intensity ratio of the strength and weak modes is about 1.4 to 1.0. According to the laser semiclassical Lamb theory, a physical model of laser gyro operating in double longitudinal modes and self-biasing is established to derive that the main factor inducing the self-biasing effect is the frequency repulsion of the weak modes. This analytic study provides a reference for developing a new type of self-biasing laser gyro. Key

Key words: ordnancescienceandtechnology, lasergyro, ringcavity, doublelongitudinalmodeoscillation, self-biasing

中图分类号:

TJ765.3⁺32

刘健宁, 焦明星, 马家君, 连天虹, 任莉娜. 棱镜式激光陀螺双纵模自偏频现象研究[J]. 兵工学报, 2017, 38(6): 1113-1119.

LIU Jian-ning, JIAO Ming-xing, MA Jia-jun, LIAN Tian-hong， REN Li-na. Study of the Double Longitudinal Mode Operation and the Self-biasing Phenomenon in Prism Laser Gyro[J]. Acta Armamentarii, 2017, 38(6): 1113-1119.

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棱镜式激光陀螺双纵模自偏频现象研究

Study of the Double Longitudinal Mode Operation and the Self-biasing Phenomenon in Prism Laser Gyro

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