Article
Chemistry, Multidisciplinary
Chaolumen Wu, Qingsong Fan, Wanling Wu, Tian Liang, Yun Liu, Huakang Yu, Yadong Yin
Summary: Integrating plasmonic resonance into photonic bandgap nanostructures allows for additional control over their optical properties. One-dimensional plasmonic photonic crystals with angular dependent structural colors are fabricated by assembling magnetoplasmonic colloidal nanoparticles under a magnetic field. The assembled structures exhibit angular dependent colors based on the activation of optical diffraction and plasmonic scattering.
Article
Optics
Xiaobin Li, Zhi-yuan Li, Wenyao Liang
Summary: The proposed research presents a tunable topological slow-light state in a photonic crystal waveguide using a unified magnetic field. The waveguide offers a compact structure, high maneuverability, and strong immunity to defects.
Article
Engineering, Electrical & Electronic
Jitendra Nath Acharyya, Narayana Rao Desai, R. B. Gangineni, G. Vijaya Prakash
Summary: This study demonstrates ultrafast absorption dynamics and enhanced features of photonic modes in a one-dimensional photonic crystal embedded with barium titanate (BaTiO3, BTO). The transient absorption behavior and nonlinear absorption dynamics reveal the excited-state absorption dynamics of BTO defect energies and the enormous cavity field confinement effect. The strong optical nonlinearities and enhanced features offer insights into electron-photon interaction, opening up possibilities for novel nonlinear, hybrid optoelectronic, and photonic device applications.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Optics
Furong Zhang, Lu He, Huizhen Zhang, Ling-Jun Kong, Xingsheng Xu, Xiangdong Zhang
Summary: As the field of topological photonics has developed, the combination of topology and photons has been proven beneficial for designing robust optical devices. However, most of the work remains theoretical, with few topologically-protected logic devices fabricated in experiments. This paper reports the experimental fabrication of a series of topologically-protected all-optical logic gates on silicon photonic platforms, showing strong robustness even in the presence of disorders. These robust logic devices have potential applications in future optical signal processing and computing.
LASER & PHOTONICS REVIEWS
(2023)
Review
Physics, Multidisciplinary
Jianfeng Chen, Zhi-Yuan Li
Summary: This paper reviews the fundamental physics, novel properties, and practical applications of topological photonic states (TPSs) based on gyromagnetic photonic crystals (GPCs). Various types of TPSs are examined, and the coupling effect between TPSs is discussed. Future development trends are also analyzed.
Article
Multidisciplinary Sciences
Lingling Fan, Kai Wang, Heming Wang, Avik Dutt, Shanhui Fan
Summary: Photonic convolution, a crucial operation in signal and image processing, can overcome computational bottlenecks and outperform electronic implementations. This study demonstrates the realization of convolution operations in the synthetic frequency dimension using a modulated ring resonator. By synthesizing arbitrary convolution kernels with high accuracy, we showcase the computation between input frequency combs and synthesized kernels. Our work highlights the efficient data encoding and computation capabilities of the synthetic frequency dimension, paving the way for compact and scalable photonic computation architecture.
Article
Optics
Vakhtang Jandieri, Ramaz Khomeriki, Koki Watanabe, Daniel Erni, Douglas H. Werner, Jamal Berakdar
Summary: Realization of externally tunable chiral photonic sources and resonators using oxide-based stacks of helical multiferroic layers, provides a suitable, electrically-controllable medium to efficiently trap and filter purely chiral photonic fields.
Article
Optics
Dadong Liu, Binjie Gao, Fujin Wang, Jisen Wen, Li-Gang Wang
Summary: This study proposes an arbitrary order alternated OV lattices and experimentally demonstrates their propagation properties. The study finds a general law regarding the number of bright spots in finite optical arrays as the value of topological charge increases. These results may have potential applications in particle trapping and experimental realizations of novel optical arrays for interaction with atoms or molecules.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qiumeng Qin, Jianfeng Chen, Hao Lin, Chaoqun Peng, Zhi-Yuan Li
Summary: We propose and realize a new configuration of a photonic Chern topological insulator (PCTI) in which five distinct types of edges allow the propagation of truly one-way edge states. We design topological transmission lines with sharp turns using this special PCTI, leading to topological resistance-free one-way transport.
Article
Materials Science, Multidisciplinary
Yan-Chen Zhou, Hua-Shan Lai, Jian-Lan Xie, Xiao-Chen Sun, Cheng He, Yan-Feng Chen
Summary: Recently, higher-order states have been discovered, enriching the study of topological phases. These states allow for manipulation of wave propagation or localization in dimensions lower than the bulk. In a two-dimensional honeycomb lattice gyromagnetic photonic crystal, magnetic corner states have been realized by breaking time-reversal and parity symmetries. These states arise from the hybridization of two Wannier centers and can be controlled solely by adding or removing magnetic fields at the corner sites.
Article
Optics
A. Aguilar Uribe, P. Yazhgur, F. Scheffold
Summary: In this study, we experimentally investigate the properties of crystalline 3D Weaire-Phelan foam structures as photonic crystals. We generate templates on the computer and fabricate foam designs using DLW lithography. By using thermal processing to shrink the foam structures, we demonstrate experimentally that the resulting foam Plateau border networks possess stop bands within a specific wavelength range, with the exact wavelength dependent on the degree of shrinkage. We also explore the relationship between the position and strength of the stop gap and the solid filling fraction.
Article
Engineering, Mechanical
Diego Misseroni, Phanisri P. Pratapa, Ke Liu, Glaucio H. Paulino
Summary: This study presents a novel experimental setup for studying the Poisson effects in 2D origami tessellations. The setup was used to measure the Poisson's ratio of the Morph, Miura-ori, and Eggbox patterns, and the results were consistent with theory and simulations. This experimental technique can be applied to investigate other tunable properties of origami metamaterials.
EXTREME MECHANICS LETTERS
(2022)
Article
Physics, Multidisciplinary
Yu Wang, Hao Lin, Jianfeng Chen, Yidong Zheng, Zitao Ji, Zhi-Yuan Li
Summary: This paper proposes a novel method to construct unidirectional 2D waveguides with larger area of energy transmission in 3D space. A 2D one-way interface transmission channel is designed and the topological phase transition between Weyl phase and 3D Chern insulator phase is studied, providing more possibilities for topological regulation of the surface states.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2023)
Article
Optics
Jin-yu Liu, Guang-quan Luo, Xiao-qiong Wang, Andreas Hemmerich, Zhi-fang Xu
Summary: This study presents a high-precision scheme to implement a hexagonal optical lattice potential and proposes a strategy to optimize the optical lattice geometry with extremely high precision, which is crucial for researching exotic orbital physics.
Article
Materials Science, Multidisciplinary
R. M. Goldblatt, A. M. Martin, A. A. Wood
Summary: In this study, we used nitrogenvacancy centers in diamond to probe the nuclear spins within dark paramagnetic nitrogen defects in the diamond lattice. We demonstrated that the effect of greatly enhanced coupling to radio frequency control fields can be tuned by an external magnetic field. This work lays the foundations for rapid control of long-lived spin qubits at room temperature.
Article
Physics, Multidisciplinary
Jianbo Pan, Jianfeng Chen, Lihong Hong, Li Long, Zhi-Yuan Li
Summary: This article develops a simple and comprehensive electromagnetic theory to study the optics of birefringent crystals. By deriving various physical and optical quantities, the theory provides a complete picture of light transport characteristics in birefringent crystals. The experimental measurements on different crystals confirm the theory, making it a useful tool for understanding light-matter interactions in these materials.
Article
Physics, Multidisciplinary
Jian Zeng, Zhi-Yuan Li
Summary: This paper presents a new quantum model to describe the optical response and spectral lineshape of a strongly coupled system. The model accurately predicts the experimental observation of Rabi splitting. This quantum theory provides valuable insights for the study of microscopic strongly coupled systems and has potential applications in quantum information processing, nano-optical integrated circuits, and polariton chemistry.
Article
Materials Science, Multidisciplinary
Junwei Xu, Ximin Tian, Zhi-Yuan Li, Kun Xu, Pei Ding, Zhanjun Yu, Yinxiao Du
Summary: This study reports three distinct spin-dependent metalenses based on the novel phase-change material GSST, enabling multidimensional splitting and switchable manipulation capabilities. These metalenses achieve spin-dependent splitting and focusing in a broadband range, providing a solid basis for versatile applications such as optical imaging and communications.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Physics, Multidisciplinary
Ya-Ting Qiu, Li-Hong Hong, Zhi-Yuan Li
Summary: This work theoretically and systematically investigates the second harmonic generation (SHG) in a lithium niobate (LN) crystal by considering the transmission and reflection of TE-polarized pump light at the air-crystal interface. The physical process of light beam transport and nonlinear optical polarization generation in the crystal is described, and the reflection coefficient and transmission coefficient of pump light are derived. The conversion efficiency of the second-harmonic wave is found to depend on the transmission coefficient and other physical quantities, such as the length of the crystal and the amplitude of pump light, under the transmission and reflection models. The proposed analytical theory and formulation provide an accurate tool for evaluating the SHG energy conversion efficiency in practical situations and can be applied to other nonlinear optics problems.
Article
Optics
Yuhao Huang, Gangchao Tang, Jianfeng Chen, Zhi-yuan Li, Wenyao Liang
Summary: This paper presents adjustable enhanced Goos-H??nchen (GH) shift in a magneto-optical photonic crystal (MOPC) waveguide. The simulation results show that the waveguide supports enhanced negative and positive GH shifts by different modes, and the direction combination of the external magnetic fields (EMFs) can switch the GH shift. Additionally, the magnitudes of both GH shifts can be adjusted by changing the strength of EMF or the width of the waveguide.
Article
Physics, Applied
Lihong Hong, Baoqin Chen, Chenyang Hu, Peng He, Zhi-Yuan Li
Summary: In this study, ultrabroadband rainbow Cherenkov second-harmonic generation (UBR CSHG) was observed in a single periodically poled lithium niobate (PPLN) nonlinear crystal. The experimental results demonstrate the rich physics of nonlinear optical interactions and suggest the possibility of engineering broadband nonlinear frequency conversion for applications in compact colored laser sources.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Multidisciplinary
Ruiling Zhang, Lin Gan, Danyang Zhang, Hao Sun, Yongzhuo Li, Cun-Zheng Ning
Summary: Heterostructures formed by 2D TMDCs and graphene are important for exploring interface physics and optoelectronic devices. This study successfully disentangled the effects of light-induced charge transfer, heating, and strain in WS2/graphene heterostructure. The results show that without separating these effects, the estimation of carrier density may have significant errors, and this approach provides a way for understanding the properties of heterostructures comprehensively.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Physics, Multidisciplinary
Yafeng Huang, Junwei Xu, Ximin Tian, Pei Ding, Zhanjun Yu, Jie Li, Yaning Xu, Shenglan Zhang, Xiaolong Ma, Xiangyang Duan, Zhi-yuan Li
Summary: This paper proposes a design strategy based on a single-cell-designed approach to achieve spin-multiplexing and varifocal performance using pure PB phases. This novel design avenue shows great potential in applications such as imaging, optical storage, and optical interconnections.
Article
Engineering, Electrical & Electronic
Zhenhao Li, Xinran Zhang, Zhibiao Hao, Yi Luo, Changzheng Sun, Bing Xiong, Yanjun Han, Jian Wang, Hongtao Li, Lin Gan, Lai Wang
Summary: High-speed micro-LEDs based on InGaN quantum dot (QD) active region with different diameters are fabricated and characterized. The blue and green micro-LEDs achieve -3dB bandwidth of approximately 3.6 GHz and 1.4 GHz, respectively, under current density less than 1 kA/cm(2), and can operate at an environmental temperature of 125 degrees C. The limiting factors of the bandwidth are analyzed using an equivalent circuit model, and it is found that the recombination rate mainly limits the bandwidth of the green micro-LEDs, while the RC constant is the main limiting factor for the blue micro-LEDs even at a diameter of 20 μm.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Physics, Applied
Zitao Ji, Jianfeng Chen, Zhi-Yuan Li
Summary: Topological photonics has shown great potential in manipulating electromagnetic waves and light. While there have been numerous studies on chiral topological photonic states, the achievements of antichiral topological photonic states have been limited. This Perspective reviews recent progress in the field, including basic concepts, properties, and applications of antichiral topological photonic states in magnetic photonic systems. The article also provides an outlook on emerging frontier topics, promising opportunities, fundamental challenges, and potential applications for antichiral magnetic topological photonics.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Optics
Jianbo Pan, Yidong Zheng, Jianfeng Chen, Zhi-Yuan Li
Summary: This article introduces the problem of electromagnetic wave transmission in a magneto-optical medium and describes several interesting physical images and classical physical variables using a simple and rigorous electromagnetic field solution approach. This theory can help deepen and broaden our understanding of basic electromagnetics, optics, and electrodynamics, and may provide insight into new ways and methods for high technologies in optics and microwaves.
Article
Optics
Lihong Hong, Chenyang Hu, Yuanyuan Liu, Huijun He, Liqiang Liu, Zhiyi Wei, Zhi-Yuan Li
Summary: In this study, a high-efficiency supercontinuum white laser with large bandwidth and high pulse energy was generated using a single nonlinear crystal. By exploiting the synergistic effects of high-harmonic generation and self-phase modulation, a 2.8-octave-spanning UV-Vis-IR supercontinuum white laser was achieved. This breakthrough has significant implications for various applications in basic science and high technology.
Article
Optics
Huakang Yu, Yipeng Lun, Jintian Lin, Yantong Li, Xingzhao Huang, Bodong Liu, Wanling Wu, Chunhua Wang, Ya Cheng, Zhi-yuan Li, Jacob B. Khurgin
Summary: This study presents a new on-chip diagnostic tool, T-FROG, for real-time full characterization of waveguided ultrashort optical pulses. Implemented on a thin-film lithium niobate platform, T-FROG accurately characterizes various properties of waveguided femtosecond pulses. In contrast to traditional techniques, T-FROG provides significant improvement by directly capturing temporal amplitude and phase profiles of ultrafast optical pulses inside photonic integrated circuits. The real-time in situ characteristics and dynamics of optical pulses offered by T-FROG show promise for their potential applications in the design, testing, and optimization of ultrafast photonic integrated circuits.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Xiaobin Li, Zhi-yuan Li, Wenyao Liang
Summary: The proposed research presents a tunable topological slow-light state in a photonic crystal waveguide using a unified magnetic field. The waveguide offers a compact structure, high maneuverability, and strong immunity to defects.
Article
Optics
Yuhao Huang, Gangchao Tang, Zhi-yuan Li, Wenyao Liang
Summary: This study presents mode conversion in different magneto-optical photonic crystal waveguides. By adjusting the geometric parameters, odd-mode and even-mode waveguides are designed, which can convert other modes into odd or even modes with almost no power loss. The waveguides are also robust against backscattering and can be used to efficiently separate odd and even modes.
