TY - GEN
T1 - Light intensity fluctuation insensitive faraday polarimeter for atomic magnetometer
AU - Qin, Jie
AU - Fang, Jiancheng
AU - Wan, Shuangai
PY - 2011
Y1 - 2011
N2 - Atomic Magnetometer has ranked the highest sensitive magnetometer in recent years. To realize a high performance atomic magnetometer, a well designed polarimeter is required to detect the atomic spin precession. Among various polarimeter techniques available, faraday polarimeter is suitable for high sensitive atomic magnetometer application due to its high angular sensitivity at low frequency range. However, this polarimeter is sensitive to light intensity fluctuation which will decrease the atomic magnetometer sensitivity and its long time performance. Instead of utilizing a light intensity feedback controlled system to active stabilize the light intensity, this paper proposed a faraday polarimeter with light intensity fluctuation compensation capability. The structure and mathematic model of this polarimeter was analyzed, experimental tests were performed. With this polarimeter, the light intensity fluctuation was decreased significantly to 0.001%, and an angular sensitivity of 10 -8 rad/Hz1/2 has been achieved.
AB - Atomic Magnetometer has ranked the highest sensitive magnetometer in recent years. To realize a high performance atomic magnetometer, a well designed polarimeter is required to detect the atomic spin precession. Among various polarimeter techniques available, faraday polarimeter is suitable for high sensitive atomic magnetometer application due to its high angular sensitivity at low frequency range. However, this polarimeter is sensitive to light intensity fluctuation which will decrease the atomic magnetometer sensitivity and its long time performance. Instead of utilizing a light intensity feedback controlled system to active stabilize the light intensity, this paper proposed a faraday polarimeter with light intensity fluctuation compensation capability. The structure and mathematic model of this polarimeter was analyzed, experimental tests were performed. With this polarimeter, the light intensity fluctuation was decreased significantly to 0.001%, and an angular sensitivity of 10 -8 rad/Hz1/2 has been achieved.
KW - atomic magnetometer
KW - faraday modulator
KW - light intensity fluctuation
KW - polarimeter
UR - https://www.scopus.com/pages/publications/80054897561
U2 - 10.1109/ICEMI.2011.6037800
DO - 10.1109/ICEMI.2011.6037800
M3 - 会议稿件
AN - SCOPUS:80054897561
SN - 9781424481590
T3 - Proceedings - IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011
SP - 215
EP - 219
BT - Proceedings - IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011
T2 - IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011
Y2 - 16 August 2011 through 18 August 2011
ER -