首页|Suppression of the vapor cell temperature error in a spin-exchange relaxation-free comagnetometer
Suppression of the vapor cell temperature error in a spin-exchange relaxation-free comagnetometer
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Suppression of the vapor cell temperature error in a spin-exchange relaxation-free comagnetometer
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 the probe laser frequency.A temperature coefficient model of the SERF comagnetometer is established based on the steady-state response,which indicates that the comagnetometer can be tuned to a working point where the output signal is insensitive to the cell tem-perature fluctuation,and the working point is determined by the relaxation rate of the alkali metal atoms.The method is verified in a K-Rb-21Ne comagnetometer,and the experimental results are consistent with the theory.The theory and method presented here lay a foundation for the practical applications of the SERF comagnetometer.
spin-exchange relaxation-freeatomic comagnetometercell temperature errorprobe laser fre-quency
刘佳丽、姜丽伟、方驰、赵鑫、陈远强
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National Institute of Extremely-Weak Magnetic Field Infrastructure,Hangzhou 310051,China
Institute of Large-scale Scientific Facility and Centre for Zero Magnetic Field Science,Beihang University,Beijing 100191,China
Zhejiang Provincial Key Laboratory of Ultra-Weak Magnetic-Field Space and Applied Technology,Hangzhou Innovation Institute,Beihang University,Hangzhou 310051,China
spin-exchange relaxation-free atomic comagnetometer cell temperature error probe laser fre-quency
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