论文标题
近似近似未能描述原子与一般涡流光场的相互作用
The paraxial approximation fails to describe the interaction of atoms with general vortex light fields
论文作者
论文摘要
沿着光的传播方向忽略电场成分是一种常见的做法，称为近似近似。然而，拉格雷 - 高斯梁对原子正面激发的实验证据和理论表明，必须考虑光场的完整矢量特征。光学涡流是一个大型田野，是拉瓜尔 - 高斯只有一种特殊情况。现在，我们通过考虑原子与广义的laguerre-gaussian和广义贝塞尔束的相互作用，扩展了对近似近似值对更广泛的光学涡流的适用性的研究。我们证明，这里所有涡流梁都认为看起来与放置原子的光束轴相同。从中，我们得出结论，大型涡流梁的近似近似失败，并且对光学涡流与原子的相互作用的完全理解需要包含电场的所有矢量成分。
Neglecting the electric field component along the light's propagation direction is a common practice, known as paraxial approximation. However, experimental evidence and theory on the head-on excitation of atoms by Laguerre-Gaussian beams reveal that the full vector character of the light field has to be taken into account. Optical vortices are a large family of fields, being Laguerre-Gaussian only one particular case. Now we extend the study of the applicability of the paraxial approximation to a broader set of optical vortices by considering the interaction of atoms with generalized Laguerre-Gaussian and generalized Bessel beams. We demonstrate that all vortex beams here considered look the same close to the beam axis, where the atom is placed. From this, we conclude that the paraxial approximation fails for the large set of vortex beams, and that a full understanding of the interaction of optical vortices with atoms requires the inclusion of all vector components of the electric field.
