Polarization Rotation via Asymmetric Optical Pumping
YANG Xu-Dong** , LI Chuan-Liang, CHEN Feng-Hua
School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024
Abstract ：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 of a 87 Rb 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 all-optical information processing.
出版日期: 2014-11-28
:
42.50.Ct
(Quantum description of interaction of light and matter; related experiments)
42.50.Gy
(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
42.25.Ja
(Polarization)
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2014, Vol. 31 
