超冷原子中的拉曼增益光栅

匡尚奇

doi:10.3788/CO.20120505.0464

超冷原子中的拉曼增益光栅

doi: 10.3788/CO.20120505.0464

cstr: 32171.14.CO.20120505.0464

匡尚奇^,

中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室, 吉林长春 130033

基金项目:

国家自然科学基金资助项目(No.61178020)

详细信息

通讯作者:
匡尚奇

中图分类号: O431.2;O436.1
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出版历程
- 收稿日期: 2012-06-22
- 修回日期: 2012-08-20
- 刊出日期: 2012-10-10

Raman gain grating in an ultracold atomic medium

KUANG Shang-qi^,

State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanic and Physics, Chinese Academy of Sciences, Changchun 130033, China

More Information

Author Bio:
KUANG Shang-qi(1981-), Associate researcher, Ph.D., Changchun Institute of Optics, Fine Mechanic and Physics, Chinese Academy of Sciences, China. His research interests include quantum optics and optical thin film. E-mail:physicskuang@sina.com

摘要

摘要: 为提高光栅的衍射效率,提出了基于主动拉曼效应的超冷原子光栅系统。理论研究表明:通过拉曼增益的空间周期性调节,可有效地将沿垂直光栅方向传播的弱探测光衍射到一级方向,同时零级衍射光将被放大。当系统中引进微波场的原子相干效应时,可以进一步提高光栅的一级衍射效率。在一定的条件下,拉曼增益光栅的一级衍射效率可高于电磁诱导相位光栅的一级衍射效率。该系统可作为高效光开关用于全光网络。
- 超冷原子 /
- 主动拉曼增益 /
- 衍射光栅 /
- 原子相干 /
- 一级衍射效率
Abstract: This paper demonstrates theoretically that a Raman gain grating can be formed in an ultracold atomic medium driven by a standing wave and a probe field. Due to the spatial modulation of active Raman gain, the weak probe field propagating along the direction normal to the standing wave can be diffracted into the first-order direction effectively, and the zero-order diffracted beam is also amplified. Under manipulation by a microwave field, the first-order diffraction efficiency can be improved to be higher than that of electromagnetically induced phase grating. This system can be used as a highly efficient switch for an all-optical network.
- ultracold atomic medium /
- active Raman gain /
- diffraction grating /
- atomic coherence /
- first-order diffraction efficiency

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参考文献(1)

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