基于极化拍频激光绝对频率与原子能级差的测量方法研究  

LASER ABSOLUTE FREQUENCY AND ENERGY-LEVEL DIFFERENCE MEASUREMENT BY POLARIZATION BEATS

作　　者：王鹏飞[1] 甘琛利 张彦鹏[3] 孙立群 

机构地区：[1]西北纺织工学院,陕西西安710048 [2]西安市农业学校,陕西西安710077 [3]西安交通大学电子科学与技术系,陕西西安710049

出　　处：《应用光学》2000年第4期12-15,共4页Journal of Applied Optics

摘　　要：研究级联三能级系统中的极化拍频技术 ,发现其对能级差的测量精度决定于光学跃迁的均匀增宽 ,在符合拍频条件下 ,两独立光源拍频的频差可以超出激光线宽 ,激光绝对频率的测量精度可达到与激光线宽同一量级。The polarization beats in a cascade three-level system have been studied. We have found that the accuracy for the energy-level difference measurement is determined by thd homogeneous linewidths of the optical transition. In the condition for the occurrence of beating, the frequency difference of the beat between two independent light sources could exceed the laser linewidth. The measurement accuracy for laser absolute frequency could reach the same order of magnitude as the laser linewidth.

关 键 词：极化拍频 能级差 激光绝对频率 原子 

分 类 号：O562.1[理学—原子与分子物理] TN24[理学—物理]