Optical Parameter Decoupling and Optimization for Elliptically Polarized Atomic Magnetometer DOI
Yifan Yan, Shaowen Zhang, Zehua Liu

и другие.

IEEE Transactions on Instrumentation and Measurement, Год журнала: 2023, Номер 73, С. 1 - 10

Опубликована: Дек. 18, 2023

Elliptically polarized atomic magnetometers (AMs) offer high sensitivity and compactness by using a single laser beam to polarize atoms detect optical rotation angles. However, their advantage over absorption-based AMs has not been sufficiently demonstrated. This is because the parameters significantly affect pumping probing processes, leading parameter coupling when both processes are optimized simultaneously. Such presents considerable challenge for achieving simultaneous optimization, ultimately limiting achievable sensitivity. In this study, we developed modified input–output model magnetometer, based on which an decoupling optimization method proposed. Our enables us obtain optimal simultaneously, including ellipticity, intensity, frequency of light. Consequently, 6 fT/Hz1/2 was achieved $4\times 4\times4$ mm3 87Rb vapor cell (an effective volume 0.027 cm3). work offers efficient strategy achieve higher single-beam miniaturized AMs, contributing promote biomagnetism research.

Язык: Английский

In-situ magnetic fields monitoring and compensation for zero-field atomic magnetometers DOI

Yifan Yan,

Kaixuan Zhang,

Zehua Liu

и другие.

Measurement, Год журнала: 2024, Номер 239, С. 115410 - 115410

Опубликована: Июль 31, 2024

Язык: Английский

Процитировано

3
Picotesla-sensitivity microcavity optomechanical magnetometry DOI Creative Commons
Zhigang Hu, Yimeng Gao, Jianfei Liu

и другие.

Light Science & Applications, Год журнала: 2024, Номер 13(1)

Опубликована: Сен. 29, 2024

Язык: Английский

Процитировано

3
Zero-field optical magnetometer based on spin alignment DOI Creative Commons
Adil Meraki, L. Elson, N.J. Ho

и другие.

Physical review. A/Physical review, A, Год журнала: 2023, Номер 108(6)

Опубликована: Дек. 11, 2023

Optically pumped magnetometers are important instruments for imaging biological magnetic signals without the need cryogenic cooling. These presently available in commercial market and utilize principles of atomic alignment or orientation, enabling remarkable sensitivity precision measurement fields. This research focuses on utilizing a spin-aligned ensemble magnetometry at zero field. An approach is introduced which involves evaluating how linear polarization light rotates as it passes through vapor to null Analytical expressions derived resulting spin photodetection signals. Experimental results provided, demonstrating good agreement with theoretical predictions. The bandwidth magnetometer characterized based detected rotation signal. Lastly, practical utility medical applications demonstrated by successfully detecting synthetic cardiac

Язык: Английский

Процитировано

8
Interspecies spin-noise correlations in hot atomic vapors DOI
K. Mouloudakis, F. Vouzinas,

A. Margaritakis

и другие.

Physical review. A/Physical review, A, Год журнала: 2023, Номер 108(5)

Опубликована: Ноя. 27, 2023

We report an experimental and theoretical study of spin-noise correlations in a $^{87}\mathrm{Rb}\text{\ensuremath{-}}^{133}\mathrm{Cs}$ unpolarized alkali-metal vapor dominated by spin-exchange collisions. observe strong unequal-time interspecies account for these with first-principles model. Since the two atomic species have different spin precession frequencies, dual-species enables use additional handle, applied magnetic field, untangling various subtypes correlations. In particular, measured cross-correlation autocorrelation spectra shed light on number spin-dynamic effects involving intra-atom, interatom, intraspecies, Cross-correlation coefficients exceeding $60%$ been observed at low fields, where couple strongly via The understanding such spontaneously generated can motivate design quantum-enhanced measurements single or multispecies spin-polarized vapors used quantum sensing applications.

Язык: Английский

Процитировано

7
Optical Parameter Decoupling and Optimization for Elliptically Polarized Atomic Magnetometer DOI
Yifan Yan, Shaowen Zhang, Zehua Liu

и другие.

IEEE Transactions on Instrumentation and Measurement, Год журнала: 2023, Номер 73, С. 1 - 10

Опубликована: Дек. 18, 2023

Elliptically polarized atomic magnetometers (AMs) offer high sensitivity and compactness by using a single laser beam to polarize atoms detect optical rotation angles. However, their advantage over absorption-based AMs has not been sufficiently demonstrated. This is because the parameters significantly affect pumping probing processes, leading parameter coupling when both processes are optimized simultaneously. Such presents considerable challenge for achieving simultaneous optimization, ultimately limiting achievable sensitivity. In this study, we developed modified input–output model magnetometer, based on which an decoupling optimization method proposed. Our enables us obtain optimal simultaneously, including ellipticity, intensity, frequency of light. Consequently, 6 fT/Hz1/2 was achieved $4\times 4\times4$ mm3 87Rb vapor cell (an effective volume 0.027 cm3). work offers efficient strategy achieve higher single-beam miniaturized AMs, contributing promote biomagnetism research.

Язык: Английский

Процитировано

7