近共振场和多色场的强光位移：Floquet理论与实验的比较
Strong light shifts from near-resonant and polychromatic fields: comparison of Floquet theory and experiment
摘要：
本文提出了一种非微扰数值方法，用于计算任意偏振态多光场作用下原子中强光位移。我们确认我们的技术实验进行光谱的云的冷$^{87}$ Rb原子进行$\sim$ kW/cm $^2$强度的光在1560.492 nm的同时与1529.269 nm或1529.282 nm。在这些条件下，1529.26 nm和1529.36 nm处的激发态共振诱导了强的能级混合，并且位移是高度非线性的。通过吸收光谱，我们观察到5 P ~（3/2）超精细塞曼子能级的诱导位移与我们的理论预测一致。我们提出了应用我们的理论和实验精确测量激发态电偶极子矩阵元素。
英文摘要：
We present a non-perturbative numerical technique for calculating strong light shifts in atoms under the influence of multiple optical fields with arbitrary polarization. We confirm our technique experimentally by performing spectroscopy of a cloud of cold $^{87}$Rb atoms subjected to $\sim$ kW/cm$^2$ intensities of light at 1560.492 nm simultaneous with 1529.269 nm or 1529.282 nm. In these conditions the excited state resonances at 1529.26 nm and 1529.36 nm induce strong level mixing and the shifts are highly nonlinear. By absorption spectroscopy, we observe that the induced shifts of the 5P3/2 hyperfine Zeeman sublevels agree well with our theoretical predictions.. We propose the application of our theory and experiment to accurate measurements of excited-state electric-dipole matrix elements.
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