Wavefront Phase Modulation of Cylindrical Vector Beam in Optical Focusing System
Wavefront phase modulation is employed in focusing system of cylindrical vector beams to from concentric piecewise wavefront, and focusing properties of the concentric piecewise cylindrical vector beams is investigated theoretically. Results show that the evolution of the focal shape is very considerable by changing the radius and polarization rotation angle of the vector beam, and some interesting focal spots may occur. For certain geometric parameters of the beam, the focal shift occurs and can be adjusted by phase shift. Some gradient force patterns are computed to show that the kind of beam can be used to construct controllable optical tweezers.
X.Gao J.Wang
Electronics and Information College,Hangzhou Dianzi University Hangzhou 310018,China
国际会议
Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)
杭州
英文
1-5
2008-03-24（万方平台首次上网日期，不代表论文的发表时间）