基于高阶LP_(21)模式的鳍豚形可发射光纤传送带  

Fin Dolphin-Shaped Transmitting Fiber Conveyor Belt Based on High-Order LP_(21) Mode

作　　者：高丙坤[1] 荣玉菲 姜春雷[1] 陈朋[1] 水华胜 吴昊 董太极 孙雨 闫文迪 Gao Bingkun;Rong Yufei;Jiang Chunei;Chen Peng;Shui Huasheng;Wu Hao;Dong Taiji;Sun Yu;Yan Wendi(College of Electrical Information Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang,China)

机构地区：[1]东北石油大学电气信息工程学院,黑龙江大庆163318

出　　处：《光学学报》2023年第7期17-26,共10页Acta Optica Sinica

基　　金：黑龙江省自然科学基金联合指导项目(LH2021F008)。

摘　　要：微粒运输和定向操纵在生物领域和医学新技术方面有着广阔的应用前景。设计了一种鳍豚形光纤光镊结构,其结合高阶LP_(21)模式实现了光纤传送带功能。通过将650nm光源输入155nm单模光纤中激发高能量比的LP_(21)模式,增强了光纤侧边缘的光场强度。在较低光功率的情况下,将聚苯乙烯微粒(5μm)捕获在光纤周围侧边缘处,并且沿光纤边缘将其运输至尖端处,最终以粒子枪形式将微粒弹射出去。应用有限元法仿真了鳍豚形光纤探针的光场强度分布,分析了微粒在光纤上的受力情况,并在不同光功率下与普通锥形光纤进行了对比实验,验证了该结构的优越性。该方法设备简单,为光纤操纵提供了新的可能。Objective Optical tweezers were first proposed by Arthur Ashkin in 1986 and were first used in the biological science field in the late 198os.Since then,optical tweezers have been applied to atomic physics,micromachining,chemistry,biomedicine,and microelectromechanical systems.Meanwhile,on the basis of application development,other new optical tweezer systems such as femtosecond and vacuum laser systems have also been derived.In addition,they have been widely combined with new biomedical technologies in recent years and used for pathological detection of cells,single-cell microsurgery,and designs of biological lasers,cell-based biological photonic waveguides,and biological micro-lenses by using biological entities such as viruses,cells,and tissues.With the rapid development of the microoperation field,functional requirements of fiber optic tweezers are becoming higher and higher,so it is particularly important to improve their utilization efficiency and integration.A variety of methods have been proposed to transport particles,and some of which are made by using double optical fibers to capture cell chains and make a conveyor belt.Some pull the bending port to enhance the evanescent field,while others pull micro-nano fibers and control the power of two lasers to transport them.Most of them transport particles over optical fibers,but optical tweezers with directional emission functions are less involved.Moreover,the use of dual fiber probes requires an extremely precise operation to prevent bending,and it takes time to capture cells when assembling long conveyor belts.Or the bending degree and flame conditions required by nanofibers make it difficult to fabricate fiber ports and thus need to consider repeatability and other issues.To solve the above problems,this paper designs a fin dolphin-shaped fiber optical tweezer structure,which combines with a high-order LP2r mode to realize the function of a fiber conveyor belt.This method is simple and provides a new possibility for optical fiber manipulation.Methods In t

关 键 词：光纤光学 微粒运输 定向操纵 鳍豚形光纤 LP_(21)模式 

分 类 号：Q631[生物学—生物物理学]