Analysis of atom detection via the magnetic optical effect

We demonstrated a new method of atom detection by means of the magnetic optical effect. The number density of the atom cloud was measured by detecting the rotation angle of the polarization plane of linearly polarized probe light when propagating inside the atomic cloud. Detuning, the magnetic field...

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Bibliographic Details
Published inChinese physics B Vol. 22; no. 1; pp. 175 - 178
Main Author 程峰 蒋小军 韩景珊 林锦达 王育竹
Format Journal Article
LanguageEnglish
Published 2013
Subjects
Aircraft detection
Atomic properties
Clouds
Density
Magnetic fields
Planes
Polarization
Propagation
Signal to noise ratio
信号噪声比
光学效应
原子云
旋转角度
检测分析
磁光效应
磁性
线偏振光
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Summary:We demonstrated a new method of atom detection by means of the magnetic optical effect. The number density of the atom cloud was measured by detecting the rotation angle of the polarization plane of linearly polarized probe light when propagating inside the atomic cloud. Detuning, the magnetic field and light intensity dependencies of the rotation angle were studied theoretically and experimentally to find the best parameter for atom detection. In this way, we managed to achieve a rotation angle of 0.22 rad with a signal to noise ratio （SNR） of 75 and a contrast of 87.5%.
Bibliography:We demonstrated a new method of atom detection by means of the magnetic optical effect. The number density of the atom cloud was measured by detecting the rotation angle of the polarization plane of linearly polarized probe light when propagating inside the atomic cloud. Detuning, the magnetic field and light intensity dependencies of the rotation angle were studied theoretically and experimentally to find the best parameter for atom detection. In this way, we managed to achieve a rotation angle of 0.22 rad with a signal to noise ratio （SNR） of 75 and a contrast of 87.5%.
atom detection, magnetic optical effect, Faraday rotation
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/1/013201