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锶原子三重态双耦合场下的原子相干谱观测

Observation of Atomic Coherence in Strontium Triplet with Double Coupling Fields

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摘要

以磁光阱中的锶冷原子为介质,对三重态双耦合场下的伞型结构电磁诱导透明(EIT)效应进行了实验观测。对实验中涉及到的抽运激光采用Pound-Drever-Hall稳频技术和注入锁定技术,对弱探测光进行功率稳定,提高了实验的观测精度。实验结果证明,耦合光的失谐量对三重态EIT有较大影响,且该EIT线形是两个Λ型结构EIT线形的简单叠加。

Abstract

The umbrella-type triplet electromagnetically induced transparency (EIT) effect driven by two coupling fields with strontium cold atoms in the magneto-optical trap as medium is observed experimentally. The Pound-Drever-Hall frequency stabilization technique and the injection locking technique are applied to the pumping laser in the experiment, and the power stabilization technique for the weak probe laser is also used. The experimental observation precision is improved by these techniques. The experimental results prove that the detuning of coupling lights has relatively great influence on the triplet EIT. Moreover, the line shape of EIT is a simple superposition of two Λ-type EIT line shapes.

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中图分类号:O431.2

DOI:10.3788/aos201737.0402001

所属栏目:原子与分子物理

基金项目:国家自然科学基金(11474282)、国家自然科学基金国家重大科研仪器设备研制专项(61127901)、中国科学院前沿科学重点研究项目(QYZDB-SSW-JSC004)、中国科学院战略性先导科技专项(B类)(XDB21030700)

收稿日期:2016-10-27

修改稿日期:2016-12-06

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作者单位    点击查看

任兆麟:中国科学院国家授时中心时间频率基准重点实验室, 陕西 西安 710600中国科学院大学, 北京 100049
王叶兵:中国科学院国家授时中心时间频率基准重点实验室, 陕西 西安 710600中国科学院大学, 北京 100049
韩建新:中国科学院国家授时中心时间频率基准重点实验室, 陕西 西安 710600中国科学院大学, 北京 100049
孔德欢:中国科学院国家授时中心时间频率基准重点实验室, 陕西 西安 710600
张首刚:中国科学院国家授时中心时间频率基准重点实验室, 陕西 西安 710600
常宏:中国科学院国家授时中心时间频率基准重点实验室, 陕西 西安 710600

联系人作者:任兆麟(rzlin1992@163.com)

备注:任兆麟(1992-),男,硕士研究生,主要从事光频标方面的研究。

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引用该论文

Ren Zhaolin,Wang Yebing,Han Jianxin,Kong Dehuan,Zhang Shougang,Chang Hong. Observation of Atomic Coherence in Strontium Triplet with Double Coupling Fields[J]. Acta Optica Sinica, 2017, 37(4): 0402001

任兆麟,王叶兵,韩建新,孔德欢,张首刚,常宏. 锶原子三重态双耦合场下的原子相干谱观测[J]. 光学学报, 2017, 37(4): 0402001

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