在4π紧聚焦系统中矢量涡旋光束实现纯横向能流  

Vector vortex beams achieve pure transverse energy flow in a 4πtight focus system

作　　者：石婷 朱明超 付圣贵 满忠胜 SHI Ting;ZHU Mingchao;FU Shenggui;MAN Zhongsheng(School of Physics and Optoelectronic Engineering,Shandong University of Technology,Zibo 255000,China;Collaborative Innovation Center of Light Manipulations and Application,Shandong Normal University,Jinan 250358,China)

机构地区：[1]山东理工大学物理与光电工程学院,山东淄博255000 [2]山东师范大学光场调控及应用协同创新中心,山东济南250358

出　　处：《光学仪器》2024年第6期25-35,共11页Optical Instruments

基　　金：国家自然科学基金(12074224,12474294);山东省自然科学基金(ZR2021YQ02)。

摘　　要：在光学领域,横向能流的精确调控对于光学捕获和光通信等应用至关重要。尽管横向能流调控技术的重要性已被广泛认可,但在4π紧聚焦系统(4π-TFS)中实现纯横向能流调控仍然是一个挑战。提出了一种在4π-TFS中产生纯横向能流的方法,该方法的核心在于采用矢量涡旋光束,通过调制其偏振分布和拓扑电荷等空间参数,进而导致焦场中纵向能流干涉抵消,从而实现纯横向能流。研究结果不仅为实现纯横向能流的调控提供了一种技术途径,而且对于推动光场调控领域的发展具有重要的科学意义。In optics,precise transverse energy flow modulation is critical for applications such as optical trapping and optical communications.Although the importance of transverse energy flow modulation techniques has been widely recognized,it is still challenging to achieve pure transverse energy flow modulation in a 4πtight focus system(4π-TFS).In this study,a method is proposed to generate pure transverse energy flow in 4π-TFS.The core of this method is the use of a vectorial vortex beam to achieve pure transverse energy flow by modulating its spatial parameters,such as polarization distribution and topological charge,which in turn leads to the interferential cancellation of longitudinal energy flow in the focal field.The results of this study not only provide an innovative technical way to realize the modulation of pure transverse energy flow,but also have important scientific significance and application prospects for promoting the development of the field of optical field modulation.

关 键 词：4π聚焦系统 横向能流 光场调控 

分 类 号：TN241[电子电信—物理电子学]