公开(公告)号：US20160260513A1

公开(公告)日：2016-09-08

申请号：US14638536

申请日：2015-03-04

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Yongle Pan ,  Brandon F. Redding

IPC: G21K1/00 ,  H05H3/04

CPC classification number: H05H3/04 ,  G01N15/1056 ,  G01N15/1434 ,  G01N15/1484 ,  G01N2015/1493 ,  G01N2015/1497 ,  G02B27/0018

Abstract: Embodiments of the present invention are directed to systems and methods for trapping and holding airborne particles. In the various embodiments, an optical trap is provided which uses a focused hollow-beam for trapping and holding both absorbing and non-absorbing airborne particles. The optical trap comprises: a trapping region where a particle can be present to be trapped; a light source for generating a coherent beam of light; optics for forming a hollow beam having a ring geometry from the coherent beam of light; and a focusing element for focusing the hollow beam to a point in the trapping region. In this arrangement, the particle is trapped at or near the focal point of the focused hollow beam.

Abstract translation: 本发明的实施例涉及用于捕获和保持空气传播颗粒的系统和方法。 在各种实施例中，提供了一种光阱，其使用聚焦的中空束来捕获和保持吸收和非吸收空气中的颗粒。 光阱包括：捕获区域，其中可以存在待捕获的颗粒; 用于产生相干光束的光源; 用于形成具有来自相干光束的环几何形状的空心光束的光学器件; 以及用于将空心束聚焦到捕获区域中的一个点的聚焦元件。 在这种布置中，颗粒被捕获在聚焦的空心束的焦点处或附近。