谐波探测在Cs原子饱和吸收光谱中的应用  

Application of Harmonic Detection in Saturated Absorption Spectra of Cs

作　　者：黄涛[1] 赵延霆[1] 赵建明[1] 肖连团[1] 贾锁堂[1] 

机构地区：[1]山西大学物理电子工程学院

出　　处：《光子学报》2003年第10期1247-1249,共3页Acta Photonica Sinica

基　　金：山西省科委科技攻关项目 ( 0 0 2 0 96 );山西省青年科学基金资助项目

摘　　要：使用低频波长调制和高次谐波探测来测量Cs原子D2 线 6S1/2 (F =4 )→ 6P3/2 (F′ =3、4、5 )跃迁的方法 ,对谐波信号的展宽特性和灵敏度进行了分析 结果显示 ,减小调制电压可以压窄线宽 ,提高分辨率 ;在一定范围内增大调制电压可以提高谐波信号强度 ,提高测量灵敏度 ;提高分辨率要以损失灵敏度为代价 提高谐波次数可以提高分辨率Low frequency voltage modulation and harmonic detection are used to measure the saturated absorption spectra (SAS) of 6S 1/2 (WTBXF=4WTBZ) →6P 3/2 transition of the cesium D 2 line. The broaden property and sensitivity of harmonic signals are analyzed. It is shown that reducing the modulation voltage can result in narrower linewidth, while increasing the modulation voltage suitably can lead to higher sensitivity. Increasing of resolution will go with the loss of sensitivity. Increasing of harmonic order will lead to higher resolution. Harmonic detection is helpful to achieve higher sensitivity and resolution.

关 键 词：饱和吸收光谱(SAS) 谐波探测 展宽特性 

分 类 号：O433.5[机械工程—光学工程]