用于冷原子干涉仪的拉曼激光的注入锁定

J4 ›› 2012, Vol. 29 ›› Issue (1): 27-31.

用于冷原子干涉仪的拉曼激光的注入锁定

王玲^1,2,3, 姚战伟^1,2,3, 熊宗元^1,2,3, 李润兵^1,2, 王谨^1,2, 詹明生^1,2

1 中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室，武汉 430071；
2 中国科学院冷原子物理中心，武汉 430071；
3中国科学院研究生院，北京，100049

收稿日期:2011-04-02 修回日期:2011-04-25 出版日期:2012-01-28 发布日期:2012-01-28
通讯作者: 王谨（1970－），甘肃人，博士，研究员，博士生导师，主要从事原子干涉仪，量子信息等方面的研究。 E-mail:wangjin@wipm.ac.cn
作者简介:王玲（1985－），湖北人，研究生，主要从事冷原子物理实验研究工作。 Emai：jackrwang@wipm.ac.cn
基金资助:
国家自然科学基金（11074281, 11004227），国家基础研究发展规划（ 2010CB832805）资助

Injection locking of Raman laser beams in cold atom interferometers

Wang Ling^1,2,3, Yao Zhanwei^1,2,3, Xiong Zongyuan^1,2,3, Li Runbing^1,2, Wang Jin^1,2, Zhan Mingsheng^1,2

1 State key Laboratory of Magnetic Resonance and Atomic and Molecular Physics，Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China；
2 Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071；
3 Graduate University of the Chinese Academy of Sciences，Beijing 100049, China

Received:2011-04-02 Revised:2011-04-25 Published:2012-01-28 Online:2012-01-28

摘要/Abstract

摘要：

原子干涉仪通常采取拉曼脉冲序列对原子波包进行相干操作，高功率的拉曼光可让更多的原子参与速度敏感型受激拉曼跃迁，有利于实现信噪比高的原子干涉仪条纹。研制高功率的拉曼激光器对冷原子干涉仪的实验研究具有重要意义，文章报道了基于注入锁定技术实现的高功率拉曼激光器的实验结果。主激光器经过1.5 GHz声光调制器产生1级衍射光作为拉曼光的种子光，注入到两个从激光器后锁定，并实现功率放大。两个拉曼光的频率相差3.0 GHz，频率调谐范围为200 MHz。

关键词: 激光技术, 拉曼激光, 注入锁定, 原子干涉

Abstract:

Raman pulse sequences are generally used to coherently manipulate the atomic wave packet in an atom interferometer. High power Raman beams allow more atoms join in the velocity-sensitive stimulated Raman transition, and that will be helpful for obtaining high signal to noise ratio in atom interferometer fringe. Development of high power Raman laser is important for cold atom interferometer experiments. In this paper, we demonstrated the experimental realization of high power Raman lasers based on injection locking technique. Master laser is modulated by a 1.5 GHz acousto-optic modulator, and the ?1 order diffraction lights are used as seeding Raman lasers. The seeding lasers are injection locked to two slave lasers which are further amplified as Raman beams. The frequency difference of the Raman beams is 3.0 GHz, and the detuning range is about 200 MHz.

Key words: laser technology, Raman laser, injection locking, atom interferometer

中图分类号:

TN248

王玲, 姚战伟, 熊宗元, 李润兵, 王谨, 詹明生. 用于冷原子干涉仪的拉曼激光的注入锁定[J]. J4, 2012, 29(1): 27-31.

Wang Ling, Yao Zhanwei, Xiong Zongyuan, Li Runbing, Wang Jin, Zhan Mingsheng. Injection locking of Raman laser beams in cold atom interferometers[J]. J4, 2012, 29(1): 27-31.

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