Multiple light scattering and optomechanical forces
Multiple light scattering and optomechanical forces
复制标题
多重光散射和光机械力
DOI：
10.1117/1.3332590
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发表时间：
2010
影响因子：
1.5
通讯作者：
Andrews D
中科院分区：
文献类型：
--
作者：
Andrews D
当非共振光通过透明介质时，光散射是发生的主要光学过程。多粒子事件在光学稀薄系统中相对罕见：散射通常发生在单个原子或分子中心。有几个众所周知的现象是由这种单中心相互作用产生的，包括瑞利和拉曼散射，以及光镊子的光机械作用力。其他不太为人所知的效应可能出现在吞吐量辐射能够同时与两个或更多纳米级邻近的散射点接触的情况下。表现出独特的近场电磁特性，粒子间的相互作用，如光学结合和各种非弹性双分子过程可以发生。尽管每个双中心过程的理论已经建立起来，但其机制的连通性并没有得到足够的重视。为了解决这一不足，并考虑随之而来的问题，有利的是用不同辐射状态之间的跃迁来表示各种形式的多粒子光散射。相应的量子振幅，记录了光子在物质系统中的轨迹演变，可以使用量子电动力学的工具来计算。多粒子散射的每一种潜在结果都会产生一组对应于组成光子-物质相互作用的不同顺序的振幅。状态序列的发展加快了在辐射态之间的量子路径上执行必要的求和，这种形式也使得能够识别由不同路径共同持有的中间态。这些结果揭示了线性动量守恒的起源和结果，也为研究近邻散射事件之间的光行为提供了新的见解。
When off-resonant light travels through a transparent medium, light scattering is the primary optical process to occur. Multiple-particle events are relatively rare in optically dilute systems: scattering generally takes place at individual atomic or molecular centers. Several well-known phenomena result from such single-center interactions, including Rayleigh and Raman scattering, and the optomechanical forces responsible for optical tweezers. Other, less familiar effects may arise in circumstances where throughput radiation is able to simultaneously engage with two or more scattering sites in close, nanoscale, proximity. Exhibiting the distinctive near-field electromagnetic character, inter-particle interactions such as optical binding and a variety of inelastic bimolecular processes can then occur. Although the theory for each two-center process is well established, the connectivity of their mechanisms has not received sufficient attention. To address this deficiency, and to consider the issues that ensue, it is expedient to represent the various forms of multi-particle light scattering in terms of transitions between different radiation states. The corresponding quantum amplitudes, registering the evolution of photon trajectories through the material system, can be calculated using the tools of quantum electrodynamics. Each of the potential outcomes for multi-particle scattering generates a set of amplitudes corresponding to different orderings of the constituent photon-matter interactions. Performing the necessary sums over quantum pathways between radiation states is expedited by a state-sequence development, this formalism also enabling the identification of intermediate states held in common by different paths. The results reveal the origin and consequences of linear momentum conservation, and they also offer new insights into the behavior of light between closely neighboring scattering events.
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纳米级光学：粒子间力
影响因子：
2.9
作者：
L. Romero;D. Andrews
通讯作者：
D. Andrews
DOI：
10.1088/0953-4075/39/15/s11
发表时间：
2006-08
期刊：
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子：
--
作者：
D. Andrews;Richard G. Crisp;D. S. Bradshaw
通讯作者：
D. Andrews;Richard G. Crisp;D. S. Bradshaw
影响因子：
2.4
作者：
Romero, Luciana C. Davila;Rodriguez, Justo;Andrews, David L.
通讯作者：
Andrews, David L.
纳米粒子组装中的光学结合：势能景观
影响因子：
2.9
作者：
Justo J Rodriguez;L. Romero;D. Andrews
通讯作者：
D. Andrews
拉曼光谱中双分子散射效应的量子电动力学研究。
DOI：
10.1103/physreva.41.2547
发表时间：
1990
期刊：
Physical review. A, Atomic, molecular, and optical physics
影响因子：
--
作者：
Andrews;Blake
通讯作者：
Blake