Article
Chemistry, Multidisciplinary
Jing Wen, Lei Chen, Binbin Yu, Jana B. Nieder, Songlin Zhuang, Dawei Zhang, Dangyuan Lei
Summary: Accelerating optical beams have unique features, but traditional generators have limitations. Recent advances in synthetic-phase metasurfaces have overcome these problems, allowing for greater control over beam parameters and making them particularly suitable for high-resolution imaging and optical manipulation.
Article
Optics
Junjie Jiang, Danlin Xu, Zhenwu Mo, Xuezhen Cai, Haoyu Huang, Yong Zhang, Haobin Yang, Haiqi Huang, You Wu, Lingling Shui, Dongmei Deng
Summary: In this study, tornado swallowtail waves (ToSWs) were generated by superimposing two pairs of ring swallowtail vortex beams (RSVBs). The ToSWs exhibited a tornado-like intensity profile and showed very high values of angular acceleration. Compared with typical tornado waves, ToSWs are more diverse and tunable, providing a new degree of freedom for propagation dynamics.
Article
Physics, Applied
Jialin Feng, Hongyu Shi, Luyi Wang, Anxue Zhang, Zhuo Xu
Summary: This paper presents a method for generating 1D finite-energy Airy beams using a metasurface, which allows for independent control of phase, amplitude, and polarization to reshape the transmitted waves according to the desired profile.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Qingqing Cheng, Juncheng Wang, Ling Ma, Zhixiong Shen, Jing Zhang, Xiaoying Zheng, Tao Chen, Ye Yu, Dong Yu, Qiong He, Wei Hu, Tao Li, Songlin Zhuang, Lei Zhou
Summary: By designing and fabricating an achromatic Airy-beam metalens, achromatic Airy beams with autofocusing and self-healing properties are successfully demonstrated, with a larger depth of focus. This paves the way for flat photonic devices for noninvasive biomedical imaging and light-sheet microscopy applications, with a numerical demonstration of a device protocol provided.
Article
Optics
Zahra Abedi Kichi, Saeed Ghavami Sabouri
Summary: This paper proposes a method for generating multiple accelerating Airy beams and demonstrates its feasibility through experiments.
Article
Materials Science, Multidisciplinary
Zezhao Ju, Jing Wen, Lina Shi, Binbin Yu, Ming Deng, Dawei Zhang, Weiming Hao, Jian Wang, Shuqi Chen, Lin Chen
Summary: Conventional methods for generating Airy beams are limited by bulky and costly systems, but a new design strategy utilizing the high birefringence and transmission efficiency of dielectric metasurfaces allows for the construction of a broadband and high-efficiency transmissive Airy optical beam generator. Experimental verification of this method demonstrates its effectiveness and showcases the unique characteristics of Airy beams.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Jinxing Li, Yueyi Yuan, Yuxiang Wang, Shuai Yang, Qun Wu, Kuang Zhang
Summary: Two transmissive metasurfaces are proposed in this article to efficiently generate zero order Bessel beams under different phase control mechanisms and working polarization conditions. By designing different meta-atoms, the metasurfaces achieve high transmission efficiency for Bessel beams in linear and circular polarization conditions.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Chemistry, Multidisciplinary
Anli Dai, Peipei Fang, Jinming Gao, Qixuan Min, Renjie Hu, Shanfeng Qiu, Xianfeng Wu, Jinying Guo, Guohai Situ
Summary: This study presents a method for constructing supercells with triple rotations to generate geometric phases and achieve multi-degree modulation capabilities. The physical meaning of each rotation is revealed through stepwise superposition, and spin-selective holography, nanoprinting, and hybrid displays are demonstrated. A spin-selective metalens is designed to enable high-quality imaging with only one spin state, serving as a plug-and-play chiral detection device. The influence of supercell size and phase distribution on higher order diffraction is analyzed for designing supercells in different scenarios.
Article
Physics, Multidisciplinary
Canhui He, Zimo Pan, Zhengyong Song
Summary: This paper presents a spin-dependent plasmonic metasurface for manipulating circularly polarized waves. By tuning the dimension and rotation angle of the meta-atoms, the propagating phase and geometric phase are synthesized, enabling control of vortex beams under different spin incidences. This approach provides a new solution for nanophotonic devices and systems.
ANNALEN DER PHYSIK
(2023)
Article
Optics
Ke Tian, Zhaoying Wang
Summary: This paper investigates the propagation properties of exponential truncation Airy beams (ETABs) on constant Gaussian curvature surfaces (CGCSs). The study shows that the trajectories of ETABs on curved surfaces have larger equivalent periodical accelerations compared to those on flat surfaces, due to the strong focusing ability of CGCSs. Non-diffraction propagation of ETABs is observed when the focusing ability of CGCSs is strong enough. Additionally, the self-healing length of ETABs on CGCSs is found to be related to the geometry of the surfaces, and it increases with the radius of CGCSs, eventually reaching the same length as on flat surfaces. These findings have implications for future applications of ETABs in particle manipulation on waveguides, light-sheet fluorescence microscopy, curved nanophotonics, etc.
Article
Nanoscience & Nanotechnology
Anastasia Zalogina, Luyao Wang, Elizaveta Melik-Gaykazyan, Yuri Kivshar, Ilya Shadrivov, Sergey Kruk
Summary: In the past decade, there have been significant advancements in mid-infrared photonics, particularly in the generation and detection of light. Efficient manipulation of mid-IR light remains challenging, but a recent study demonstrated spatially inhomogeneous polarization control using custom-designed vortex retarders. This implementation of mid-infrared vortex retarders based on metasurfaces could potentially lead to new classes of mid-infrared optical components.
Article
Optics
Hui Li, Chenglong Zheng, Hang Xu, Jie Li, Chunyu Song, Fan Yang, Jitao Li, Wei Shi, Yating Zhang, Jianquan Yao
Summary: In this study, an all-graphene geometric metasurface operating in the terahertz band is proposed and investigated. It can generate focused scalar vortex beams with polarization-independent properties by introducing a superposition of two helical phases. By embedding polarization modulation, multiple focused vortices with inhomogeneous polarization properties can be generated. The proposed design scheme has a greater degree of freedom and can find potential applications in meta-optics, high-tolerance edge imaging, and high-capacity optical communications.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Junhui Jia, Haolin Lin, Yixuan Liao, Zhen LI, Zhenqiang Chen, Shenhe Fu
Summary: We report a class of nondiffracting solutions to the paraxial wave equation perturbed by a harmonic potential. These solutions allow light to accelerate along an arbitrary trajectory centered on an elliptic or circular orbit in a (2+1)D configuration, while maintaining their phase and polarization structures during propagation. We name these oscillating wave packets as pendulum-type beams.
Article
Optics
Qian Chen, Morteza Hajati, Xin Liu, Yangjian Cai, Sergey A. Ponomarenko, Chunhao Liang
Summary: We have experimentally realized Airy beams on incoherent background (ABIBs), which are structured random beams that can defy diffraction. These beams are attractive for optical communications, information transfer, and imaging. Our experiments have shown that truncated ABIBs are more resilient to diffraction and have stronger self-healing capabilities after obstruction compared to truncated coherent Airy beams.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Physics, Applied
Xizhou Chen, Suyu Ding, Qinran Wei, Juan Tu, Xiasheng Guo, Dong Zhang
Summary: This paper provides an analytical theory for Gaussian modulated Airy (gAiry) acoustic beams and reveals that gAiry beams inherit the advantages of standard Airy beams. Numerical calculations and finite element simulations show that side lobes are reduced in gAiry fields generated by sources of limited apertures, and bilateral focusing using a pair of beams improves field features compared to focused Airy fields. The theories and observations presented in this paper can contribute to the deployment of gAiry beams in applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Yanqiu Dai, Haoyu Wang, Jing Du, Sonia Ghafoor, Xiuxia Wang, Pei Wang, Yonghua Lu
Article
Physics, Multidisciplinary
Tianyang Zang, Haofeng Zang, Zheng Xi, Jing Du, Han Wang, Yonghua Lu, Pei Wang
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Applied
Haoqi Luo, Xi Tang, Yonghua Lu, Pei Wang
Summary: BSW confined at the surface of a truncated dielectric multilayer is a low-loss platform for chip-scale photonic integration. By engineering geometric parameters, low-loss BSW waveguides and high-Q BSW resonators can be realized, providing an alternative way to achieve ultrasmall resonators with a high-Q factor. Applications of photonic integrated circuits on a low-loss BSW platform include optical communications, enhancing light-matter interactions, and nonlinear optical applications.
PHYSICAL REVIEW APPLIED
(2021)
Article
Multidisciplinary Sciences
Haofeng Zang, Zheng Xi, Zhiyu Zhang, Yonghua Lu, Pei Wang
Summary: This research demonstrates the first prototype polarization-encoded metasurface for ultrasensitive long-range transverse displacement metrology, achieving nanometer displacement resolution and a measurement range of 200 micrometers.
Article
Chemistry, Physical
Kuanguo Li, Xiangyu Tang, Haiyang Wang, Menghong Huang, Guangju Liu, Yong Zhou, Wanxia Huang, Zewen Zuo, Yonghua Lu
Summary: An efficient fabrication route was developed to produce a large-area and highly-ordered Ag opposing double nanocrescents-nanoparticle (AODCP) array. The fabrication process of crescent-shaped plasmonic nanostructures can be controlled, and the localized electrical fields are highly enhanced in the nanogaps and at the tips of the nanocrescents due to the coupling between the nanocrescents and nanoparticles. The AODCP arrays show promising applications in nonlinear optics, optical sensors, and surface enhanced spectroscopy.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ghulam Abbas Khan, Yonghua Lu, Pei Wang
Summary: Graphene absorption in the visible to near-infrared spectrum can be enhanced by optimizing the metastructure. Surface plasmons and magnetic dipole plasmons play a key role in absorption. The dynamic control of surface plasmon resonance and magnetic dipole plasmon opens up possibilities for various optoelectronic applications.
Article
Materials Science, Multidisciplinary
Zhiyu Zhang, Haoyu Wang, Kun Zhao, Haofeng Zang, Liangliang Liu, Wen Liu, Pei Wang, Yonghua Lu
Summary: A dielectric chiral metasurface is designed and fabricated to demonstrate its strong intrinsic optical chirality in the visible spectrum. The metasurface exhibits giant optical activity with zero circular dichroism, enabling the rotation of linearly polarized incident light. A phenomenological model is proposed to explain the chiral optical response, and the multipole decomposition of the electric fields confirms the relationship between high-order multipole moments and the chiral optical response. These findings have implications for the development of compact devices for flexible light polarization manipulation.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Haoqi Luo, Liangliang Liu, Zheng Xi, Yonghua Lu, Pei Wang
Summary: In this study, the combination of a photonic crystal slab and a reflected multilayer substrate is used to dynamically manipulate the polarization singularities. By adjusting the spacing between the slab and the substrate, circularly polarized states and bound states in the continuum are generated and collide with intrinsic bound states. Importantly, all these bound states are topologically protected throughout the dynamic process due to the preservation of structural symmetry.
Article
Nanoscience & Nanotechnology
Yuheng Chen, Han Li, Mark Blei, Maoqi Cai, Haofeng Zang, Yonghua Lu, Sefaattin Tongay, Ying Liu
Summary: The study demonstrates a unique technique for enhancing photoluminescence in MoS2 monolayers by utilizing gold quasi-periodic nanoterrace morphology, and provides detailed insights on the mechanism through comprehensive spectroscopy studies. The results lay the foundation for understanding photoluminescence enhancement effects and offer guidance for the development of high-efficiency optoelectronic devices based on TMD monolayers, such as diodes, lasers, and heterostructure solar cells.
ACS APPLIED NANO MATERIALS
(2021)