高数值孔径聚焦三维光链的研究  

Study of 3D optical chain with highly focused vector beam

作　　者：张艳丽[1] 赵逸琼[1] 詹其文 李永平[1] 

机构地区：[1]中国科学技术大学物理系,合肥230026 [2]美国戴顿大学电子光学系

出　　处：《物理学报》2006年第3期1253-1258,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10274078)资助的课题.~~

摘　　要：通过设计衍射光学元件对入射矢量光进行调制,在高数值孔径聚焦系统焦点附近产生沿光轴方向的三维多点光俘获结构———光链.并针对不同的入射矢量偏振、聚焦透镜的数值孔径以及衍射光学元件结构,对光链性能的影响分别进行了系统的分析,实现对该独特光俘获结构的可控性研究.We present a design of diffractive optical element to produce 3D optical chain along optical axis near the focus of a high numerical aperture （NA） lens by spatially modulating the phase of incoming vector beam. This optical chain can trap multiple individual particles in three dimensions at different planes near the focus. For flexibly controlling this special optical trapping system, we systematically analize the factors affecting the characteristics of the optical chain, such as different incoming vector polarization of light, the NA of the lens, and the structure of the DOE.

关 键 词：衍射光学元件 矢量光 光镊 

分 类 号：O436.1[机械工程—光学工程]