泵浦激光频率波动对核磁共振陀螺仪零偏稳定性的影响研究

摘要

本文研究了泵浦激光频率波动对核磁共振陀螺仪零偏稳定性的影响.通过分析核磁共振陀螺仪理论模型和自旋光泵浦极化129Xe的过程,阐述泵浦激光频率波动对陀螺仪零偏稳定性的影响机理.结果表明,泵浦光频率波动会导致核磁共振陀螺仪零偏稳定性下降约3个数量级.泵浦光频率波动是制约核磁共振陀螺仪性能提升的重要因素.%The bias drift of NMRG with the frequency fluctuation of pump laser has been investigated in this paper.The theoretical model of NMRG and the process of 129Xe polarization via spin-exchange optical pumping (SEOP) have been analyzed.The principle that how the bias drift of NMRG is affected by the frequency fluctuation of pump laser has been studied.The result shows that the bias drift of NMRG deteriorates almost three orders due to the frequency fluctuation of pump laser.The frequency fluctuation of pump laser is an important factor for further improving the performance of NMRG.