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研究了不同腔镜结构不同失调情况对空间谐振式激光陀螺中光束空间位置的影响.利用Collins积分与Collins程函理论以及MATLAB软件工具,对腔镜失调前后激光陀螺中光束传输进行了仿真计算.结果表明,相同失调量的不同反射镜所产生的拍频频差是不同的,且分别从M1和M4镜探测到的拍信号频不相同;对于小增益激光器,使用球面镜的腔镜结构较平面镜的腔镜结构更易形成稳定光束空间位置分布;由所计算的空间坐标xn可以看出,双向行波光束的光斑中心发生了偏移,在一定的失调量下将会影响到激光陀螺的拍频输出.研究结果对激光陀螺的工程检测和腔镜调整有指导作用,有助于激光陀螺测量准确度的提高.
The influence of different misalignments of different endoscopic structures on the beam spatial position in the cavity resonator laser gyroscope was studied.The beam transmission in the laser gyroscope before and after the endoscope misalignment was simulated by using Collins integral theory, Collins letter theory and MATLAB software tools. The results show that the beat errors produced by different mirrors with the same offset amount are different, and the beat signals detected by M1 and M4 mirrors are different from each other. For the small gain laser, the mirror structure using the spherical mirror is more flat than the mirror The structure of the endoscope is easier to form a stable spatial position distribution of the beam. From the calculated spatial coordinates xn, it can be seen that the center of the spot of the bi-directional traveling wave beam has been offset. Under a certain offset, the beat output of the laser gyro will be affected The research results are helpful to the engineering detection of laser gyroscope and the adjustment of endoscope, which is helpful to improve the measurement accuracy of laser gyroscope.