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CPT原子频标实验研究 被引量:3

Experimental investigation of CPT atomic frequency standard
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摘要 介绍了相干布居囚禁(CPT)原子频标的小型、低功耗物理系统,并应用它开展实现了CPT原子频标的激光锁定、微波锁定方案的实验室研究.通过采用电流负反馈将激光频率锁定在原子对激光的吸收峰上,电压负反馈将微波频率锁定在电磁感应透明共振峰上,用该物理系统实现了闭环锁定的实验室桌面CPT频标实验系统.对该实验系统的频率稳定度测量获得200 s内优于5×10-11τ-1/2的结果. A small sized and low power consumption physical package of CPT atomic frequency standard developed by us is introduced in the paper. The experiments of locking laser frequency and microwave frequency were carried out and realized with the physical package. By locking laser frequency to atomic absorption spectrum through current negative feedback and locking microwave frequency to electromagnetic induced transparency resonance peak through voltage negative feedback respectively, the locking of the clock frequency of this laboratorial desktop experimental CPT frequency standard is realized. The measurement of the frequency stability of this experimental system demonstrate a performance better than 5×10^-11τ^-1/2( 1-200 s).
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 2009年第9期6117-6121,共5页 Acta Physica Sinica
基金 国家自然科学基金(批准号:10574141 10675162)资助的课题~~
关键词 CPT原子频标 频率稳定度 激光稳频 CPT atomic frequency standard frequency stability laser frequency stabilization
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