考虑温度扰动的情况下, 对光在棱镜表面反射和折射的传输矩阵进行了修正.根据激光环形腔自洽理论, 建立了温度扰动下的棱镜式激光陀螺腔内光束传输物理模型, 分析了温度扰动对陀螺频率偏移、标度因数等参数的影响.理论分析表明, 当温度在－40~70℃范围波动时, 激光陀螺光学腔长变化量、频率偏移量和标度因数变化量依次为10.04 μm、0.011 MHz和1.96×10－10.建立了棱镜式激光陀螺变温实验系统, 实验结果与理论分析相吻合.

The temperature perturbation being considered, the transmission matrixes of the reflected and refracted light beams on the prism surfaces have been modified. According to the self-consistent theory of the laser ring cavity, a physical model of the intra-cavity light transmission has been established considering the temperature disturbance in prism laser gyroscope, and the influences on the frequency variation, scale factor and other parameters have been analyzed. The theoretical analysis shows that when the temperature varies from －40℃to 70℃, the changes of the optical cavity-length, frequency offset, and scale factor are 10.04 μm, 0.011MHz and 1.96×10－10, respectively. An experimental system of the prism laser gyroscope has been established whose temperature can be changed, and the experimental results agree with the theoretical values.