| Autor: |
Ding N, Kang GG, Zhang XX, Guo YX, Guo ZY, Zhao L, Jin WQ, Zheng HQ, Ren QY, Zhao H |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2022 Sep 15; Vol. 47 (18), pp. 4608-4611. |
| DOI: |
10.1364/OL.468358 |
| Abstrakt: |
The magneto-optical resonance response of sodium atoms generated by a high-energy solid-state pulse Nd:YAG laser is studied in different external magnetic fields. We investigate the resonance fluorescence signal of sodium atoms in a simulated sea fog environment based on the laser-induced plasma (LIP) effect. By ionizing an NaCl solution spray to generate sodium atoms in an atmospheric environment, we build a Bell-Bloom magneto-optical resonance system under laboratory conditions. With the help of laser-induced breakdown spectroscopy (LIBS) and extinction spectrum, we obtain sodium atoms with a lifetime of 250 µs. A narrowband tunable continuous wave (CW) 589-nm laser tuned at the D 2 line with a modulation frequency around the Larmor frequency is used as the pump beam to polarize sodium atoms in the test magnetic field. We find that the magneto-optical resonance signals vary with different external magnetic fields and the positions of the resonance signal are consistent with the theoretical values. An intrinsic magnetometric sensitivity of 620.4 pT in a 1-Hz bandwidth is achieved. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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