Off-resonance atomic bragg scattering
Off-resonance atomic bragg scattering
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非共振原子布拉格散射
DOI：
10.1103/physreva.76.053629
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发表时间：
2007
影响因子：
2.9
通讯作者：
Van Leeuwen
中科院分区：
文献类型：
--
作者：
M. Jansen;K. Domen;Hcw Herman Beijerinck;Van Leeuwen
我们进行了广泛的测量原子布拉格散射的散射效率的驻波高达六阶，并开发了一个两态Demkov模型来解释的结果。利用原始动量态和反射动量态之间的有效2N光子耦合和绝热转移的假设，我们导出了散射几率。这个概率有两个因素：一个是代表著名的彭德洛松振荡的振荡部分，另一个是在两个动量状态之间的能量差达到峰值的部分。这最后一部分描述了角度失调的布拉格条件的公差。与此模型的测量和数值模拟的比较显示出良好的一致性。
We performed extensive measurements on the scattering efficiency of atomic Bragg scattering on a standing light wave up to sixth order and developed a two-state Demkov model to explain the results. Using an effective 2N-photon coupling between the original and the reflected momentum states and the assumption of a mostly adiabatic transfer we derived the scattering probability. This probability has two factors: an oscillating part which represents the well-known Pendellosung oscillation and a part that is peaked in the energy difference between the two momentum states. This last part describes the tolerance on the Bragg condition for angular misalignment. Comparison of the measurements and numerical simulations with this model shows good agreement.