scholarly journals On-site monitoring of atomic density number for an all-optical atomic magnetometer based on atomic spin exchange relaxation

2016 ◽  
Vol 24 (15) ◽  
pp. 17234 ◽  
Author(s):  
Hong Zhang ◽  
Sheng Zou ◽  
Xiyuan Chen ◽  
Ming Ding ◽  
Guangcun Shan ◽  
...  
Keyword(s):  
Spin Exchange ◽  
Atomic Density ◽  
Atomic Spin ◽  
Site Monitoring ◽  
All Optical

scholarly journals Parameter Modeling Analysis and Experimental Verification on Magnetic Shielding Cylinder of All-Optical Atomic Spin Magnetometer

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Hong Zhang ◽  
Sheng Zou ◽  
Xi-Yuan Chen ◽  
Wei Quan
Keyword(s):  
Magnetic Measurement ◽  
Magnetic Shielding ◽  
Key Factors ◽  
Actual Measurement ◽  
Atomic Spin ◽  
Modeling Analysis ◽  
Measurement Results ◽  
All Optical ◽  
Ultrahigh Sensitivity ◽  
Shielding Effects

The ultrahigh sensitivity atomic spin magnetometer as the magnetic measurement sensor has received much concern. The performance of the magnetic shielding cylinder is one of the key factors constraining the atomic spin magnetometer’s sensitivity. In order to effectively improve the performances of the magnetic shielding, the parameter optimization models of the magnetic shielding cylinder were established in this paper. Under the condition of changing only one parameter while the others keeping constant, the effects of various parameters influencing the axial shielding coefficient were comprehensively analyzed, and the results showed that the smaller the innermost length, the innermost radius, and the radial spacing were, and the greater the axial spacing was, the better the shielding performance could be obtained. According to these results and the actual needs, the magnetic shielding cylinder was optimally designed, and then the shielding effects were simulated via the software Ansoft. The simulation results showed that the optimized magnetic shielding cylinder had the advantages of small size, high shielding performance, and lager uniformity than that of the nonoptimized one. The actual measurement results showed that the residual magnetism in the optimized magnetic shielding cylinder was below 0.1 nT, which was 2~4 times lower than the nonoptimized one.

Influence of He Buffer Gas Pressure on Cs Atomic Polarizability

2013 ◽  
Vol 475-476 ◽  
pp. 173-176
Author(s):  
Qiang Liu ◽  
Yu Dan Sun ◽  
Yan Nan Zhuo ◽  
Jia Xing Wang ◽  
Tian Shu Fu
Keyword(s):  
Magnetic Field ◽  
Weak Magnetic Field ◽  
Spin Exchange ◽  
High Sensitivity ◽  
Buffer Gas ◽  
Pressure Broadening ◽  
Vapor Cell ◽  
Spin Relaxation Rate ◽  
All Optical ◽  
Atomic Polarizability

All optical cesium (Cs) atomic magnetometer with high sensitivity is an important technique to detect weak magnetic field. The Cs vapor cell is filled with He buffer gas to reduce spin relaxation rate. However the pressure of He also influences the Cs atomic polarizability due to pressure broadening effect. In this work, the principle of all optical Cs atomic magnetometer is analyzed. The rate equation is used to calculate Cs atomic polarizability as the pressure of He is about 100Torr and pure Cs vapor cell. The calculation shows that higher pressure of He buffer gas can decrease Cs atomic polarizability without considering spin-exchange collisions, as the pump beam frequency is locked to Cs D1 transition F=3F=4.

Atomic spin-exchange collisions in magnetic fields

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Wei Xiao ◽  
Teng Wu ◽  
Xiang Peng ◽  
Hong Guo
Keyword(s):  
Magnetic Fields ◽  
Spin Exchange ◽  
Atomic Spin

Single-beam Ultra-sensitive Magnetic Field Gradiometer based on Atomic Spin-exchange Relaxation-free Effect

2021 ◽  
Author(s):  
Yang Li ◽  
Yuxuan Ren ◽  
Huihui Zhai ◽  
Sanjiang Ai ◽  
Xuejing Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Spin Exchange ◽  
Single Beam ◽  
Atomic Spin

Experimental Investigation on Nonlinearity of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope

2019 ◽  
Vol 39 (8) ◽  
pp. 0806004
Author(s):  
陈东营 Chen Dongying ◽  
杨远洪 Yang Yuanhong ◽  
王中亮 Wang Zhongliang ◽  
刘峰 Liu Feng ◽  
姜丽伟 Jiang Liwei ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Spin Exchange ◽  
Atomic Spin

scholarly journals Transient dynamics of atomic spin in the spin-exchange-relaxation-free regime

2021 ◽  
Vol 29 (6) ◽  
pp. 8333
Author(s):  
Junjian Tang ◽  
Yan Yin ◽  
YueYang Zhai ◽  
Binquan Zhou ◽  
Bangcheng Han ◽  
...  
Keyword(s):  
Spin Exchange ◽  
Transient Dynamics ◽  
Atomic Spin

An atomic spin precession detection method based on electro-optic modulation in an all-optical K–Rb hybrid atomic magnetometer

2017 ◽  
Vol 50 (26) ◽  
pp. 265001 ◽  
Author(s):  
Yanhui Hu ◽  
Xuejing Liu ◽  
Yang Li ◽  
Han Yao ◽  
Lingling Dai ◽  
...  
Keyword(s):  
Detection Method ◽  
Spin Precession ◽  
Atomic Spin ◽  
Electro Optic ◽  
All Optical
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