论文标题
旋转1系统的自旋噪声光谱中的双发性和二分法效应
Birefringence and dichroism effects in the spin noise spectra of a spin-1 system
论文作者
论文摘要
我们在室温下在亚稳态氦原子中执行自旋噪声光谱实验，其探针灯的频率是蓝色的，从D0线中蓝色。在理论和实验中探索了圆形双折射波动（法拉第噪声）和线性双折射波动（椭圆噪声）。特别是，在这两种情况下，对于不同的光学引导，在Larmor频率下隔离了两个噪声共振，并以行为的行为隔离了Larmor频率的两倍，这在很大程度上取决于探针场极化的方向。亚稳态氦气的简单结构使我们能够用圆形和线性二分法以及双重折射和双重振动模式来探测，建模和解释这些峰行为的变化。
We perform spin noise spectroscopy experiments in metastable helium atoms at room temperature, with a probe light whose frequency is blue detuned from the D0 line. Both circular birefringence fluctuations (Faraday noise) and linear birefringence fluctuations (ellipticity noise) are explored theoretically and experimentally. In particular, it is shown that in both cases but for different optical detunings, two noise resonances are isolated at the Larmor frequency and at twice the Larmor frequency with a behaviour, which strongly depends on the orientation of the probe field polarization. The simple structure of metastable helium allows us to probe, model and explain the changes in the behavior of these peaks in terms of circular and linear dichroisms and birefringences as well as in terms of spin oscillation modes.
