All-dielectric silicon metalens for two-dimensional particle manipulation in optical tweezers

来源 :PhotonicsResearch | 被引量 : 0次 | 上传用户:a170911
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Dynamic control of compact chip-scale contactless manipulation of particles for bioscience applications remains a challenging endeavor, which is restrained by the balance between trapping efficiency and scalable apparatus. Metasurfaces offer the implementation of feasible optical tweezers on a planar platform for shaping the exerted optical force by a microscale-integrated device. Here we design and experimentally demonstrate a highly efficient silicon-based metalens for two-dimensional optical trapping in the near-infrared. Our metalens concept is based on the Pancharatnam–Berry phase, which enables the device for polarization-sensitive particle manipulation. Our optical trapping setup is capable of adjusting the position of both the metasurface lens and the particle chamber freely in three directions, which offers great freedom for optical trap adjustment and alignment. Two-dimensional (2D) particle manipulation is done with a relatively low-numerical-aperture metalens (NAML=0.6). We experimentally demonstrate both 2D polarization-sensitive drag and drop manipulation of polystyrene particles suspended in water and transfer of angular orbital momentum to these particles with a single tailored beam. Our work may open new possibilities for lab-on-a-chip optical trapping for bioscience applications and microscale to nanoscale optical tweezers.
其他文献
半导体抽运碱金属蒸气激光器(DPAL)是具有潜力的新型高能激光光源,高功率抽运条件下,铷原子会发生电离,对激光器性能产生负面影响。铷原子主要电离通道之一是抽运光谱(中心波长780 nm)和远翼776 nm 成分引起的5S→5P→5D 的级联效应以及后续的光电离过程。为了定量测量铷DPAL 电离度,需要搭建窄线宽776 nm 高功率半导体光源以模拟780 nm 抽运光的远翼光谱成分。基于Littrow 结构实现了窄线宽776 nm 半导体激光输出,激光线宽小于0.15 nm,功率大于10 W,外腔效率为67
A TiO2/porous silicon (PS) composite system is prepared by chemical vapor deposition. The crystal form with anatase phase of the samples is evaluated by X-ray diffraction and ultraviolet-visible (UV-vis) absorbance spectra, and the morphology with microsp
To investigate the effect of Myocardin-related transcription factor A (MRTF-A) on apoptosis induced by ischemic/reperfusion (I/R), middle cerebral artery occlusion /reperfusion (MCAO/R) in rats were applied to mimic I/R. The neurological deficit score, ce
美帝海岸和测地局正利用激光器改良长线测量。多数大地测量工作都在夜间进行,因为夜间的大气比较稳定。但激光器却能在白天进行工作。激光将使测地队员一次完成长距离测量,而无须分成两次。该项激光技术由该局的大地测量分部和国家标准局联合进行。
期刊
介绍了一种利用倏逝波界面散射对单个纳米颗粒进行无标记成像的方法。分别使用全内反射(TIR)倏逝波与表面等离激元(SPPs)两种倏逝波与单个纳米颗粒相互作用,激发纳米颗粒极化并发生散射,所产生的界面散射与入射倏逝波发生干涉,形成了纳米颗粒极化场与抛物线形干涉条纹的特征成像。分别对直径为500,200,100 nm的聚苯乙烯颗粒进行了单个纳米颗粒无标记成像。比较了两种倏逝波界面散射对单个纳米颗粒成像结果,发现表面等离激元界面散射成像中的单个纳米颗粒极化强度约是全内反射极化强度的10倍,并且接近于暗场成像。因此
A new receiver is proposed, which uses the fiber optical parametric amplifier (FOPA) in optical code division multiple access (OCDMA) over free space optic (FSO) communication system. The noise tolerance as the performance index in this receiver is derive
期刊
据报导,日本丸文公司将出售500毫瓦的连续输出半导体激光器,这种商品化的激光器由光谱物理公司和复印机公司的联合承包者光谱二极管实验室提供。
期刊
期刊
We present a method that accurately measures large optical surfaces before polishing using a laser tracker. Using the scanning mode of the laser tracker considerably improves measurement efficiency and minimizes the dominant errors caused by environmental
In the context of nonlinear plasmonics, we review the recently introduced concept of plasmonic parametric resonance (PPR) and discuss potential applications of such phenomena. PPR arises from the temporal modulation of one or more of the parameters govern