Chiral discrimination in optical binding
Chiral discrimination in optical binding
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DOI：
10.1103/physreva.91.053824
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发表时间：
2015-05
影响因子：
2.9
通讯作者：
K. A. Forbes;D. Andrews
中科院分区：
文献类型：
--
作者：
K. A. Forbes;D. Andrews
在电磁场存在下，两个或多个粒子之间存在的激光诱导的分子间力通常被称为“光学结合”。与分子水平上的光俘获中起作用的单粒子力不同，光束缚现象是中性粒子中光诱导偶极矩之间耦合的表现。在其他更广为人知的光学领域，有许多手性识别的例子-表示手性材料对光输入的手性有不同的响应。在本分析中，扩展以前的工作手性歧视的光学结合，一种机制，确定使用量子电动力学的方法。结果表明，一对手性分子之间的光学结合力可以显着歧视性的性质，这取决于双方的相互作用粒子的手性和入射光的偏振，它通常是几个数量级大于以前报道的。
The laser-induced intermolecular force that exists between two or more particles in the presence of an electromagnetic field is commonly termed ``optical binding.'' Distinct from the single-particle forces that are at play in optical trapping at the molecular level, the phenomenon of optical binding is a manifestation of the coupling between optically induced dipole moments in neutral particles. In other, more widely known areas of optics, there are many examples of chiral discrimination---signifying the different response a chiral material has to the handedness of an optical input. In the present analysis, extending previous work on chiral discrimination in optical binding, a mechanism is identified using a quantum electrodynamical approach. It is shown that the optical binding force between a pair of chiral molecules can be significantly discriminatory in nature, depending upon both the handedness of the interacting particles and the polarization of the incident light, and it is typically several orders of magnitude larger than previously reported.