反向传播圆偏振光波下的高质量能级交叉共振在原子磁力测量中的应用
High-quality level-crossing resonances under counterpropagating circularly polarized light waves for applications in atomic magnetometry
摘要：
研究了在反向传播的泵浦光和探测光的圆偏振方向相反的情况下，填充缓冲气体的铯蒸气池中的能级交叉（LC）共振。波激发D $_1$ -线基态能级$F_g$ $=\,$ $4$，而横向磁场（${\rm B}_x$ $\perp$ ${\rm k}$）在零附近扫描以观察电磁感应吸收（EIA）的共振。结果表明，增加泵浦光波显着改善的谐振特性相比，通常使用的方案与一个单一的光波。对于在较低温度（$\approx\,$ 45-60 $\,^\circ$ C）下使用小型蒸气室（$\approx\,$ 0.1 cm $^3$）的情况，其结果对研制低功耗小型化原子磁力计具有良好的前景。
英文摘要：
Level-crossing (LC) resonances in a buffer-gas-filled cesium vapor cell are studied under counterpropagating pump and probe light waves with opposite circular polarizations. The waves excite the D$_1$-line ground-state level $F_g$$=\,$$4$, while a transverse magnetic field (${\rm B}_x$$\perp$${\rm k}$) is scanned around zero to observe the resonance of electromagnetically induced absorption (EIA). It is shown that adding the pump light wave significantly improves the properties of the resonances in comparison with the commonly used scheme with a single light wave. As far as a small vapor cell ($\approx\,$0.1 cm$^3$) at relatively low temperature ($\approx\,$45-60$\,^\circ$C) is utilized, the results have good prospects for developing a low-power miniaturized atomic magnetometer.
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