All-optical atomic magnetometry using an elliptically polarized amplitude-modulated light wave
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913601771536384 |
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| author | Makarov, Anton Kozlova, Katerina Brazhnikov, Denis Vishnyakov, Vladislav Goncharov, Andrey |
| author_facet | Makarov, Anton Kozlova, Katerina Brazhnikov, Denis Vishnyakov, Vladislav Goncharov, Andrey |
| contents | We study a resonant interaction of an elliptically polarized light wave with $^{87}$Rb vapor (D$_1$ line) exposed to a transverse magnetic field. A $5$$\times$$5$$\times$$5$~mm$^3$ glass vapor cell is used for the experiments. The wave intensity is modulated at the frequency $Ω_m$. By scanning $Ω_m$ near the Larmor frequency $Ω_L$, a magnetic resonance (MR) can be observed as a change in the ellipticity parameter of the wave polarization. This method for observing MR allows to significantly improve the signal-to-noise ratio compared to a classical Bell-Bloom scheme using a circularly polarized wave. The sensitivity of the magnetic field sensor is estimated to be $\approx\,$$130$~fT/$\surd$Hz in a $2$~kHz bandwidth, confidently competing with widely used Faraday-rotation Bell-Bloom schemes. The results can be used to develop a miniature all-optical magnetic field sensor for medicine and geophysics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_01968 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | All-optical atomic magnetometry using an elliptically polarized amplitude-modulated light wave Makarov, Anton Kozlova, Katerina Brazhnikov, Denis Vishnyakov, Vladislav Goncharov, Andrey Atomic Physics Instrumentation and Detectors Quantum Physics We study a resonant interaction of an elliptically polarized light wave with $^{87}$Rb vapor (D$_1$ line) exposed to a transverse magnetic field. A $5$$\times$$5$$\times$$5$~mm$^3$ glass vapor cell is used for the experiments. The wave intensity is modulated at the frequency $Ω_m$. By scanning $Ω_m$ near the Larmor frequency $Ω_L$, a magnetic resonance (MR) can be observed as a change in the ellipticity parameter of the wave polarization. This method for observing MR allows to significantly improve the signal-to-noise ratio compared to a classical Bell-Bloom scheme using a circularly polarized wave. The sensitivity of the magnetic field sensor is estimated to be $\approx\,$$130$~fT/$\surd$Hz in a $2$~kHz bandwidth, confidently competing with widely used Faraday-rotation Bell-Bloom schemes. The results can be used to develop a miniature all-optical magnetic field sensor for medicine and geophysics. |
| title | All-optical atomic magnetometry using an elliptically polarized amplitude-modulated light wave |
| topic | Atomic Physics Instrumentation and Detectors Quantum Physics |
| url | https://arxiv.org/abs/2408.01968 |