Cs法拉第反常色散光学滤波应用于边缘滤波器特性分析  

Theoretical Analysis of Characteristics of Cs Faraday Anomalous Dispersion Optical Filtering's Use in Edge Filters

作　　者：张永涛[1] 彭玉峰[2] 彭爱莲[2] 李阔湖[2] 陈靖[2] 

机构地区：[1]洛阳师范学院物理与电子科学系,河南洛阳471022 [2]河南师范大学物理与信息工程学院,河南新乡453007

出　　处：《河南师范大学学报（自然科学版）》2006年第3期64-66,98,共4页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家重点基础研究计划("973"计划)子课题

摘　　要：提出将Cs法拉第反常色散光学滤波应用于边缘滤波器,以弥补利用127I2和129I2分子的共振跃迁实现分子边缘滤波器的不足.对Cs 6S1/27P1/2法拉第反常色散谱的滤波特性、频率调谐特性进行了理论分析.结果表明:Cs原子的法拉第反常色散谱对称地存在2个陡的线翼透射峰,通过调节气室温度和外加磁场强度,线翼透射峰中心频率可以被调节到适当的位置,以满足边缘滤波器的实际需要.The use of Faraday anomalous dispersion optical filtering in edge filters was proposed, which can cover the shortages of edge filters in using resonant transitions in the ^127 I2 and ^129 I2 molecules. The characteristics of filtering and frequency tuning of Faraday anomalous dispersion spectrum of Cs 6S1/2 7P1/2 transition were analyzed theoretically. The results show that there are two steep transmission peaks in line-wing symmetrically in the Faraday anomalous dispersion spectrum of Cs atoms,by adjusting the temperature of atomic vapor cell and the external magnetic field strength, the central frequencies of the transmission peaks in line-wing can be tuned to the desired locations.

关 键 词：滤波 法拉第反常色散 线翼透射 CS原子 

分 类 号：O562.3[理学—原子与分子物理]