Photonic tractor beams:a review  

作　　者：Weiqiang Ding Tongtong Zhu Lei-Ming Zhou Cheng-Wei Qiu 

机构地区：[1]Harbin Institute of Technology,Department of Physics,Harbin,China [2]National University of Singapore,Department of Electrical and Computer Engineering,Singapore

出　　处：《Advanced Photonics》2019年第2期6-19,共14页先进光子学（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.11874134 and 11474077).

摘　　要：Usually,an unfocused light beam,such as a paraxial Gaussian beam,can exert a force on an object along the direction of light propagation,which is known as light pressure.Recently,however,it was found that an unfocused light beam can also exert an optical pulling force(OPF)on an object toward the source direction;the beam is accordingly named an optical tractor beam.In recent years,this intriguing force has attracted much attention and a huge amount of progress has been made both in theory and experiment.We briefly review recent progress achieved on this topic.We classify the mechanisms to achieve an OPF into four different kinds according to the dominant factors.The first one is tailoring the incident beam.The second one is engineering the object’s optical parameters.The third one is designing the structured material background,in which the light–matter interaction occurs,and the fourth one is utilizing the indirect photophoretic force,which is related to the thermal effect of light absorption.For all the methods,we analyze the basic principles and review the recent achievements.Finally,we also give a brief conclusion and an outlook on the future development of this field.

关 键 词：optical pulling force optical tractor beam optical manipulation Bessel beam nanophotonic structures PHOTOPHORESIS photophoretic force 

分 类 号：O43[机械工程—光学工程]