Polarization Rotation via Asymmetric Optical Pumping

The polarization rotation of a linearly polarized optical （probe） field caused by a left-circularly polarized pumping beam is studied in an opened two-level system ofa STRb atom. Letting a linearly polarized optical field （probe） and left-circularly polarized pumping beams co-propagate through a Rb...

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Bibliographic Details
Published inChinese physics letters Vol. 31; no. 11; pp. 66 - 69
Main Author 杨旭东 李传亮 陈峰华
Format Journal Article
LanguageEnglish
Published 01.11.2014
Subjects
Asymmetry
Beams (radiation)
Data processing
Low light level
Optical pumping
Polarization
RB原子
Semiconductors
Switching
传导材料
偏振控制
偏振旋转
光学信息处理
极化
线偏振光
非对称
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Summary:The polarization rotation of a linearly polarized optical （probe） field caused by a left-circularly polarized pumping beam is studied in an opened two-level system ofa STRb atom. Letting a linearly polarized optical field （probe） and left-circularly polarized pumping beams co-propagate through a Rb vapor, we observe the featurable polarization rotation signals of the linearly polarized probe field via the asymmetric optical pumping with low intensities. Based on this phenomenon, a polarization-controlled light switching can be demonstrated at a low light level Such a scheme of polarization rotation can be extended in a solid or semi-conduct material and find a practical application in al1-optical information processing.
Bibliography:11-1959/O4
YANG Xu-Dong, LI Chuan-Liang, CHEN Feng-Hua（School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024）
The polarization rotation of a linearly polarized optical （probe） field caused by a left-circularly polarized pumping beam is studied in an opened two-level system ofa STRb atom. Letting a linearly polarized optical field （probe） and left-circularly polarized pumping beams co-propagate through a Rb vapor, we observe the featurable polarization rotation signals of the linearly polarized probe field via the asymmetric optical pumping with low intensities. Based on this phenomenon, a polarization-controlled light switching can be demonstrated at a low light level Such a scheme of polarization rotation can be extended in a solid or semi-conduct material and find a practical application in al1-optical information processing.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/11/114204