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首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >Gradient force pattern, focal shift, and focal switch in an apodized optical system
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Gradient force pattern, focal shift, and focal switch in an apodized optical system

机译:变迹光学系统中的梯度力模式,焦点偏移和焦点切换

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摘要

In this paper, the evolution of the gradient force pattern, focal shift, and focal switch induced by a three-portion pure phase-shifting apodizer is numerically investigated in detail. The results show that the proposed apodizer may induce tunable gradient force on the particles in the focal region, focal shift, and focal switch. By adjusting the geometrical parameters of the phase-shifting apodizer, multiple traps may occur with changeable distance between them, and the shape of the optical trap also evolves evidently. More interestingly, for certain geometrical parameters of the proposed apodizer, by changing the phase shift of inner annular portion, the considerable focal shift may occur with focal switch accompanying, which is discussed to show that this kind of apodizer may be a very promising method of transporting trapped particles. © 2005 Elsevier GmbH. All rights reserved.
机译:在本文中,详细研究了由三部分纯相移切趾器引起的梯度力模式,焦点偏移和焦点切换的演变。结果表明,所提出的切趾器可能会在焦点区域,焦点移动和焦点切换上的粒子上产生可调的梯度力。通过调整相移变迹器的几何参数,可能会出现多个陷阱,并且陷阱之间的距离会发生变化,并且光学陷阱的形状也会明显演变。更有趣的是,对于拟议的切趾器的某些几何参数,通过改变内部环形部分的相移,伴随着聚焦开关可能会发生相当大的焦移,这被讨论以表明这种切趾器可能是一种非常有前途的方法。运输被困的颗粒。 &复制; 2005 Elsevier GmbH。版权所有。

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