^(87)Rb-Ar光谱灯光谱特性和滤光效果研究  

Spectrum Characteristics and Filtering Effect of ^(87)Rb-Ar Spectrum Lamp

作　　者：许风[1,2] 郝强[1,2] 何胜国[1,2] 梅刚华[1] 

机构地区：[1]中国科学院原子频标重点实验室(中国科学院武汉物理与数学研究所),湖北武汉430071 [2]中国科学院大学,北京100049

出　　处：《波谱学杂志》2016年第1期125-132,共8页Chinese Journal of Magnetic Resonance

摘　　要：通过超精细光谱测量,研究灯泡和滤光泡均充入氩气情形下,铷光谱灯的光谱特性和同位素滤光效果.研究结果表明,充氩气的铷光谱灯谱线轮廓存在一定程度的变形,为了减轻这种变形,谱灯的工作温度应适当降低.此外,滤光泡气压、长度和工作温度对滤光效果有显著影响.根据研究结果,优化了谱灯和滤光泡的设计参数和工作参数.将优化后的铷光谱灯和滤光泡用于铷原子频标,显著改善了短期频率稳定度.Via hyperfine spectral profile measurements, the spectrum characteristics and isotope filtering effect of the rubidium spectrum lamp were studied under the circumstance that both the lamp bulb and the filtering cell are filled with argon buffer gas. Spectral profile distortion of the ^87Rb-Ar spectrum lamp was observed, and it was found that a lower temperature in the lamp bulb could minimize the distortion. The results also showed that the pressure, length and operation temperature of the filtering cell have evident influences on the filtering effect. After design and operation parameters being optimized, the spectrum lamp and the filtering cell were used in a rubidium frequency standard, and the short-term frequency stability was greatly improved.

关 键 词：铷原子频标 铷光谱灯 铷滤光泡 同位素滤光 超精细光谱 

分 类 号：O482.53[理学—固体物理]