Signal-enhanced spin-exchange relaxation-free atomic magnetometer

Li, Cao; Tang, Junjian; Zhang, Yaohua; Yuan, Ziqi; Li, Jiajie; Zhai, Yueyang; Liu, Ying

doi:10.1016/j.sna.2023.114247

Cited by 9 publications

(1 citation statement)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Existing approaches for enhancing polarization uniformity primarily address longitudinal nonuniformity caused by atomic absorption. Methods to improve the longitudinal polarization uniformity of the atomic ensemble involve techniques like beam reflection [24] and opposite pumping. [25,26] Nevertheless, improving transverse polarization uniformity proves challenging through direct alterations to the magnetometer configuration, as it mainly depends on the transverse intensity distribution of the pump light.…”

Section: Introductionmentioning

confidence: 99%

Performance optimization of a SERF atomic magnetometer based on flat-top light beam

Yuan 袁,

Tang 唐,

Lin 林

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

In this study, we explore the impact of pumping beams with different transverse intensity profiles on the performance of the spin-exchange relaxation-free (SERF) atomic magnetometers (AMs). We conduct experiments comparing the traditional Gaussian optically-pumped AM with that utilizing the flat-top optically-pumped (FTOP) method. Our findings reveal that the FTOP-based approach outperforms the conventional method, exhibiting a larger response, a narrower magnetic resonance linewidth, and a superior low-frequency noise performance. Specifically, the use of FTOP method leads to a 16% enhancement in average sensitivity within 1-30 Hz frequency range. Our research emphasizes the significance of achieving transverse polarization uniformity in AMs, providing insights for future optimization efforts and sensitivity improvements in miniaturized magnetometers.

show abstract

Section: Introductionmentioning

confidence: 99%

Performance optimization of a SERF atomic magnetometer based on flat-top light beam

Yuan 袁,

Tang 唐,

Lin 林

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

Influence of Pumping Laser Intensity Uniformity on Hybrid Optically Pumped Comagnetometer in the SERF Regime

Ma,

Liu,

Pang

et al. 2024

Adv Quantum Tech

View full text Add to dashboard Cite

The effect of pumping laser intensity uniformity (PLIU) on the operation of a hybrid optically pumped comagnetometer operating in the spin‐exchange relaxation‐free regime (SERF) regime is investigated in this paper. First, an analytical steady‐state output model for the comagnetometer with two alkali‐metal atoms and one noble‐gas atom is presented. By varying the diameter of the pumping laser beam to control the PLIU, 3D distribution models of the electron spin and nuclear spin polarization under different PLIU conditions are obtained. In the experiment, the effects of PLIU on multi‐parameter, low‐frequency magnetic‐noise suppression capability, and long‐term stability of the SERF comagnetometer are studied. The results indicate that within a certain range, increasing the diameter of the pumping laser beam improves the polarization uniformity of the atomic ensemble and reduces the light shift of the comagnetometer. As a result, both the low‐frequency magnetic noise suppression capability and the long‐term stability of the system increase. However, further reduction of the pumping laser diameter leads to a reversal of the system performance metrics, suggesting the presence of a tipping point. The research presented in this article is critical for advancing the efficient polarization study and hyperpolarization of SERF comagnetometers.

show abstract

Interval stability and ADRC of vapor cell temperature in miniaturized SERF atomic magnetometer based on light absorption

Xu,

Jia,

Wang

et al. 2023

Sensors and Actuators A: Physical

View full text Add to dashboard Cite

Signal-enhanced spin-exchange relaxation-free atomic magnetometer

Cited by 9 publications

References 45 publications

Performance optimization of a SERF atomic magnetometer based on flat-top light beam

Performance optimization of a SERF atomic magnetometer based on flat-top light beam

Influence of Pumping Laser Intensity Uniformity on Hybrid Optically Pumped Comagnetometer in the SERF Regime

Interval stability and ADRC of vapor cell temperature in miniaturized SERF atomic magnetometer based on light absorption

Contact Info

Product

Resources

About