论文标题
使用振幅调节的光在rubidium蒸气中磁共振的光和极化角依赖性：理论和实验研究
Light ellipticity and polarization angle dependence of magnetic resonances in rubidium vapor using amplitude-modulated light: Theoretical and experimental investigations
论文作者
论文摘要
我们报告了通过同步光泵泵产生的磁共振的极化依赖性的实验和理论研究。用狭窄线宽的磁共振使用带有octade-cyltrichlorosilane（OTS）抗延缓涂层的rubidium蒸气池在内壁上产生。 We studied the effect of light ellipticity on the amplitudes and widths of magnetic resonances by matching the light modulation frequency with 2 Ω_L (alignment) and Ω_L(orientation) in a Bell-Bloom interaction geometry, where Ω_L corresponds to the Larmor frequency. 2Ω_l和\ o omgal共振幅度均显示出对光椭圆率的强烈依赖。此外，我们表明，光调制的占空比改变了2Ω_l和ω_l在光椭圆时的振幅变化的斜率。作为潜在应用，我们表明2Ω_landΩ_lresonance振幅之间的差异可用于原位测量光椭圆度。我们还研究了2Ω_l和ω_l共振幅度对线性极化光的极化角度的依赖性。这些振幅以极化角度定期振荡。我们发现这种振荡行为对从极化平面的磁场方向倾斜敏感。这种属性可用于实现矢量磁力计。开发了基于密度矩阵的理论模型，以模拟不同光极化的磁共振光谱。我们的理论模型准确地重现了上述实验观察结果。
We report on experimental and theoretical investigations of the polarization dependence of magnetic resonance generated by synchronous optical pumping. Magnetic resonances with narrow linewidth are generated experimentally using a rubidium vapor cell with octade-cyltrichlorosilane (OTS) antirelaxation coating on inner walls. We studied the effect of light ellipticity on the amplitudes and widths of magnetic resonances by matching the light modulation frequency with 2 Ω_L (alignment) and Ω_L(orientation) in a Bell-Bloom interaction geometry, where Ω_L corresponds to the Larmor frequency. Both 2 Ω_L and \OmegaL resonance amplitudes showed a strong dependence on the light ellipticity. In addition, we showed that the duty cycle of light modulation changes the slope of amplitude variations in 2Ω_L and Ω_L resonances with light ellipticity. As a potential application, we showed that the difference between 2Ω_Land Ω_Lresonance amplitudes can be used for in situ measurement of light ellipticity. We also studied the dependence of 2Ω_L and Ω_L resonance amplitudes on the polarization angle of linearly polarized light. These amplitudes oscillate periodically with the polarization angle. We found this oscillatory behavior to be sensitive to the tilt in magnetic field direction from the polarization plane. Such a property could be used to realize a vector magnetometer. A density matrix based theoretical model is developed to simulate the magnetic resonance spectrum for different light polarizations. Our theoretical model accurately reproduces the above mentioned experimental observations.
