| Autor: |
Ning Ding, Guo-Guo Kang, Xiao-Xu Zhang, Yi-Xin Guo, Zong-Yu Guo, Luo Zhao, Wei-Qi Jin, Hui-Qi Zheng, Qiong-Ying Ren, Hua Zhao |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Optics letters. 47(18) |
| ISSN: |
1539-4794 |
| Popis: |
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 D2 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: |
OpenAIRE |
| Externí odkaz: |
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