首页> 外文期刊>Journal of the Optical Society of America, B. Optical Physics >Atoms in axially shifted tightly focused counter-propagating beams: the role of the Gouy and curvature phases
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Atoms in axially shifted tightly focused counter-propagating beams: the role of the Gouy and curvature phases

机译:在轴向移位的原子上紧密聚焦的反传播梁:粪便和曲率阶段的作用

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摘要

We consider the interaction of atoms with two tightly focused and axially shifted counter-propagating optical beams. At sub-wavelength focusing, we find that the scattering force potential in the three-dimensional space between the shifted focal planes changes from a feature with a saddle-point to a three-dimensional trapping potential. Further analysis shows that due to the tight focusing, the trapping depends on significant contributions arising from the Gouy and curvature phase gradients of the interfering beams. The physics and its effects are illustrated with reference to the sub-wavelength trapping of sodium atoms. (C) 2020 Optical Society of America
机译:我们考虑原子与两个紧密聚焦和轴向移位的反传播光束的相互作用。 在子波长聚焦时,我们发现偏移焦平面之间的三维空间中的三维空间中的散射力电位从具有鞍点的特征变为三维捕集电位。 进一步的分析表明,由于重点紧,俘获取决于来自干扰梁的粪便和曲率相位梯度产生的显着贡献。 参考钠原子的亚波长捕获来说明物理及其效果。 (c)2020美国光学学会

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