تقرير
Wide range linear magnetometer based on a sub-microsized K vapor cell
| العنوان: | Wide range linear magnetometer based on a sub-microsized K vapor cell |
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| المؤلفون: | Auzinsh, M., Sargsyan, A., Tonoyan, A., Leroy, C., Momier, R., Sarkisyan, D., Papoyan, A. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Physics - Atomic Physics |
| الوصف: | $^{39}$K atoms have the smallest ground state ($^2S_{1/2}$) hyperfine splitting of all the most naturally abundent alkali isotopes and, consequently, the smallest characteristic magnetic field value $B_0 = A_{^2S_{1/2}}/\mu_B \approx 170$ G, where $A_{^2S_{1/2}}$ is the ground state's magnetic dipole interaction constant. In the hyperfine Paschen-Back regime ($B \gg B_0$, where $B$ is the magnitude of the external magnetic field applied on the atoms), only 8 Zeeman transitions are visible in the absorption spectrum of the $D_1$ line of $^{39}$K, while the probabilities of the remaining 16 Zeeman transitions tend to zero. In the case of $^{39}$K, this behavior is reached already at relatively low magnetic field $B > B_0$. For each circular polarization ($\sigma^-,\sigma^+$), 4 spectrally resolved atomic transitions having a sub-Doppler width are recorded using a sub-microsized vapor cell of thickness $L = 120 - 390$ nm. We present a method that allows to measure the magnetic field in the range $0.1 - 10$ kG with micrometer spatial resolution, which is relevant in particular for the determination of magnetic fields with a large gradient (up to 3 G$/\mu$m). The theoretical model describes well the experimental results. Comment: 7 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1364/AO.459251 |
| الوصول الحر: | http://arxiv.org/abs/2203.11553Test |
| رقم الانضمام: | edsarx.2203.11553 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1364/AO.459251 |
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