Nanoscale stratification of local optical fields in low-dimensional atomic lattices.
Nanoscale stratification of local optical fields in low-dimensional atomic lattices.
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DOI：
10.1103/physrevlett.101.133902
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发表时间：
2008-09
影响因子：
8.6
通讯作者：
A. Kaplan;S. Volkov
中科院分区：
文献类型：
--
作者：
A. Kaplan;S. Volkov
我们预测了由于激光驱动的局域场在一维和二维晶格中的不均匀而导致的纳米尺度的场和偶极图案。它们可能导致与尺寸相关的共振和大场增强，这反过来又可以引起低强度的非线性光学效应，例如光学双稳，即使在一对耦合原子的最终情况下也是如此。在晶格中原子的“魔力”数目和组态一定时，系统可能会表现出对局域场的抑制的自感应抵消。
We predict nanoscale field and dipole patterns due to the broken uniformity of a laser-driven local field in 1D and 2D lattices. They may result in size-related resonances and large field enhancement, which in turn can give rise to low-intensity nonlinear optical effects, e.g., optical bistability, even in the ultimate case of a pair of coupled atoms. At certain, "magic" numbers and configurations of atoms in a lattice, the system may exhibit the self-induced cancellation of the suppression of a local field.