TY - GEN
T1 - Research on methods for weak signal detection of atomic magnetometers
AU - Liu, Yang
AU - Quan, Wei
AU - Wang, Tao
PY - 2012
Y1 - 2012
N2 - Atomic magnetometers use the coherent precession of polarized atomic spins to detect and measure magnetic fields. When an off-resonant, linearly polarized probe beam propagates through the atomic vapor cell, the precession will cause a rotation of its polarization plane. Measuring the angle of the rotation, the magnetic field can be calculated. In this paper, we introduce the basic principles of atomic magnetometers and describe the method to measure the angle. Then a dual-phase lock-in amplifier (LIA) is proposed to detect the weak signal of the atomic magnetometer. And we design a simulation for the LIA based on Matlab/Simulink. Our theoretical analysis and simulation results show that the detecting system is well working and it is possible to detect weak signal of magnetic fields in an accurate way.
AB - Atomic magnetometers use the coherent precession of polarized atomic spins to detect and measure magnetic fields. When an off-resonant, linearly polarized probe beam propagates through the atomic vapor cell, the precession will cause a rotation of its polarization plane. Measuring the angle of the rotation, the magnetic field can be calculated. In this paper, we introduce the basic principles of atomic magnetometers and describe the method to measure the angle. Then a dual-phase lock-in amplifier (LIA) is proposed to detect the weak signal of the atomic magnetometer. And we design a simulation for the LIA based on Matlab/Simulink. Our theoretical analysis and simulation results show that the detecting system is well working and it is possible to detect weak signal of magnetic fields in an accurate way.
KW - Atomic Magnetometers
KW - Dual-phase LIA
KW - Rotation
KW - Weak Signal Detection
UR - https://www.scopus.com/pages/publications/84867321031
U2 - 10.1109/ISICT.2012.6291619
DO - 10.1109/ISICT.2012.6291619
M3 - 会议稿件
AN - SCOPUS:84867321031
SN - 9781467326162
T3 - 2012 the 8th IEEE International Symposium on Instrumentation and Control Technology, ISICT 2012 - Proceedings
SP - 286
EP - 290
BT - 2012 the 8th IEEE International Symposium on Instrumentation and Control Technology, ISICT 2012 - Proceedings
T2 - 8th IEEE International Symposium on Instrumentation and Control Technology, ISICT 2012
Y2 - 11 July 2012 through 13 July 2012
ER -