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Suppression of vapor cell temperature error for spin-exchange-relaxation-free magnetometer
Review of Scientific Instruments, 2015This paper presents a method to reduce the vapor cell temperature error of the spin-exchange-relaxation-free (SERF) magnetometer. The fluctuation of cell temperature can induce variations of the optical rotation angle, resulting in a scale factor error of the SERF magnetometer.
Jixi, Lu +3 more
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Spin dynamics of the potassium magnetometer in spin-exchange relaxation free regime
Chinese Physics B, 2016The laser-pumped potassium spin-exchange relaxation free (SERF) magnetometer is the most sensitive detector of magnetic field and has many important applications. We present the experimental results of our potassium SERF magnetometer. A pump–probe approach is used to identify the unique spin dynamics of the atomic ensemble in the SERF regime.
Ji-Qing Fu +3 more
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Spin Exchange Relaxation Free (SERF) Magnetometers
2016A little more than a decade ago spin-exchange relaxation free (SERF) magnetometers set a new record of magnetic field sensitivity surpassing cryogenic SQUIDs. Since then a lot of progress has been made in design, commercialization, and development of novel applications of the SERF magnetometers.
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Miniature quad-channel spin-exchange relaxation-free magnetometer for magnetoencephalography
Chinese Physics B, 2019A miniature quad-channel optically pumped atomic magnetometer (OPM) has been developed based on the spin-exchange relaxation-free (SERF) mechanism. With a vapor cell of size 8 mm×8 mm×8 mm, we have incorporated four SERF magnetometer channels, which provides sufficient spatial resolution for magnetoencephalography (MEG).
Jian-Jun Li +5 more
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2016 IEEE SENSORS, 2016
Spin-exchange-relaxation-free (SERF) atomic magnetometer is the most sensitive magnetic detector in the world at present due to the fact that the broadening of spin-exchange collision is eliminated by operating at high alkali-mental density and low magnetic field.
Yanzhang Wang +3 more
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Spin-exchange-relaxation-free (SERF) atomic magnetometer is the most sensitive magnetic detector in the world at present due to the fact that the broadening of spin-exchange collision is eliminated by operating at high alkali-mental density and low magnetic field.
Yanzhang Wang +3 more
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Review of Scientific Instruments, 2014
The hybrid optical pumping atomic magnetometers have not realized its theoretical sensitivity, the optimization is critical for optimal performance. The optimizations proposed in this paper are suitable for hybrid optical pumping atomic magnetometer, which contains two alkali species.
Jiancheng Fang +4 more
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The hybrid optical pumping atomic magnetometers have not realized its theoretical sensitivity, the optimization is critical for optimal performance. The optimizations proposed in this paper are suitable for hybrid optical pumping atomic magnetometer, which contains two alkali species.
Jiancheng Fang +4 more
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Review of Scientific Instruments, 2012
The spin-exchange-relaxation-free (SERF) atomic magnetometer is an ultra-high sensitivity magnetometer, but it must be operated in a magnetic field with strength less than about 10 nT. Magnetic field compensation is an effective way to shield the magnetic field, and this paper demonstrates an in situ triaxial magnetic field compensation system for ...
Jiancheng, Fang, Jie, Qin
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The spin-exchange-relaxation-free (SERF) atomic magnetometer is an ultra-high sensitivity magnetometer, but it must be operated in a magnetic field with strength less than about 10 nT. Magnetic field compensation is an effective way to shield the magnetic field, and this paper demonstrates an in situ triaxial magnetic field compensation system for ...
Jiancheng, Fang, Jie, Qin
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Dynamics of a Spin-Exchange Relaxation-Free Comagnetometer for Rotation Sensing
Physical Review Applied, 2022Jiali Liu +6 more
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Femtotesla all-optical dual-axis spin-exchange relaxation-free magnetometer
Applied Physics LettersThe sensitivity of existing all-optical atomic magnetometers is significantly compromised due to the simultaneous influence of optical parameters on both optical pumping and optical modulation of atoms. The tight interlinkage of these processes poses challenges for their individual optimization, thereby restricting the achievable sensitivity.
Xiaoyu Li +6 more
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Suppression of the vapor cell temperature error in a spin-exchange relaxation-free comagnetometer
Chinese Physics BAbstract The fluctuation of the vapor cell temperature leads to the variations of the density of the alkali metal atoms, which seriously damages the long-term stability of the spin-exchange relaxation-free (SERF) comagnetometer. To address this problem, we propose a novel method for suppressing the cell temperature error by manipulating ...
Jia-Li 佳丽 Liu 刘 +4 more
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