钠原子D_2线无多普勒饱和荧光光谱的测量  

Sodium Atoms D_2 Line Doppler-Free Saturation Fluorescence Spectra Measurements

作　　者：闫召爱[1,2] 胡雄[1] 郭商勇[1] 程永强[1] 吴小成[1] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《光学学报》2010年第4期1036-1040,共5页Acta Optica Sinica

基　　金：国家自然科学基金(40774087);中国科学院知识创新工程重要方向性项目(KJCX2-YW-T13-2)资助课题

摘　　要：建立了用于测量钠原子光谱的无多普勒饱和荧光光谱测量系统。在该系统中使用了线宽约100kHz的窄线宽染料激光器和光电二极管探测器。钠泡温度控制在65℃。两束相向传播的激光束在钠泡中重叠共同激发荧光。光电二极管被放置在钠泡的侧面接收、探测激发的荧光。LabVIEW软件控制的数据采集卡采集光电二极管的信号。通过扫描染料激光器的激光频率,可以观测到钠原子的无多普勒特征D_(2a),交叉共振以及D_(2b)。当激光频率扫描的步长约为2 MHz时,在实验中观测到了D_(2a)中的三条谱线。The Doppler-free saturation fluorescence spectra system is set up.100 kHz narrow-band dye laser and photodiode are used in this system.Two counterpropagating dye laser beams overlap on a Na cell whose temperature is set at 65℃.And a photodiode located at one side of the Na cell collects and detects the excited fluorescence.Then photodiode signal is sampled by data acquisition card which is controlled by LabVIEW software.Doppler-free features D_（2a）,crossover and D_（2b） are observed by scanning the dye laser frequency.When the dye laser frequency scan step is about 2 MHz,three lines in the D_（2a） can be observed in this experiment.

关 键 词：光谱学 超精细光谱 饱和荧光 钠原子 

分 类 号：O433.1[机械工程—光学工程] O562[理学—光学]