Article
Physics, Applied
Weipeng Hu, Chao Liu, Jun Guo, Xiaoyu Dai, Shuangchun Wen, Yuanjiang Xiang
Summary: This study proposes a high-efficiency second-harmonic generation (SHG) using dual-frequency topological edge states (TESs) in topological photonic crystals (TPCs) with slow-light conditions. The wave vector matching and energy conservation conditions are achieved by adjusting the structural parameters of TPCs. The double-resonant nonlinear interaction between two TESs is enabled using a square lattice TPC. The topological localization of TESs and the long interaction time of the slow-light effect significantly increase the energy densities of the fundamental wave and SHG.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Optics
Qingchen Yuan, Linpeng Gu, Liang Fang, Xuetao Gan, Zhigang Chen, Jianlin Zhao
Summary: This study demonstrates strongly enhanced third-harmonic generation (THG) by utilizing the topological localization of an edge mode in a Su-Schrieffer-Heeger (SSH) chain of silicon photonic crystal nanocavities. The edge mode inherits the resonant properties of the single nanocavity and exhibits topological features with robustness. By engineering the SSH nanocavities, a strong THG signal similar to that of a single nanocavity is achieved, showing three orders of magnitude enhancement compared to a trivial SSH structure. The results suggest that the photonic crystal nanocavity chain can serve as a promising platform for topology-driven nonlinear photonics.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Shaoxin Shen, Yue Zeng, Zehuan Zheng, Renxian Gao, Guoya Sun, Zhilin Yang
Summary: This paper designs and fabricates three-dimensional metal-dielectric-metal plasmonic nanocavities with tunable modal volumes and reduced optical losses. It is found that these nanocavities can amplify second-harmonic lights by up to three orders of magnitude. The mechanism behind this signal amplification is attributed to the plasmon hybridization effect.
Article
Optics
Yao Lu, Hao Xiong, Yibo Huang, Qiang Wu, Jiwei Qi, Chongpei Pan, Jingjun Xu
Summary: This study presents a technique for nonlinear harmonic generation of THz waves based on phononic polariton-enhanced giant THz nonlinearity in a 2D-topologically protected valley photonic microcavity. Effective THz harmonic generation has been observed in both noncentrosymmetric and centrosymmetric nonlinear materials. These findings provide a valuable reference for generating and controlling THz high harmonics, thereby developing new nonlinear devices in the THz regime.
CHINESE OPTICS LETTERS
(2023)
Article
Multidisciplinary Sciences
Ki Young Lee, Seungjin Yoon, Seok Ho Song, Jae Woong Yoon
Summary: This paper proposes a topological beam emitter structure with submicrometer footprint size, small divergence angle, high efficiency, and adaptable beam shaping capability, making it suitable for various applications.
Article
Optics
Yohann Franz, Jack Haines, Cosimo Lacava, Massimiliano Guasoni
Summary: In this paper, two strategies for achieving wideband light generation through intermodal nonlinear parametric processes in multimode integrated waveguides are discussed. It is outlined how the interplay among intermodal interactions and high dispersion may lead to the generation of light with substantial power spectral density, with a long-term vision of generating widely tunable radiation with high-power spectral density in a broad portion of the transparency window of silicon.
Article
Chemistry, Analytical
I. Neelakanta Reddy, Won Young Jang, V Manjunath, Jaesool Shim
Summary: Nanostructures of Fe3O4, Bi2O3, and Fe3O4-Bi2O3 were synthesized by a facile coprecipitation process for energy generation applications. Various analyses confirmed the formation of the nanostructures and their optical, electrochemical, and photoelectrochemical properties. The Fe3O4-Bi2O3 nanostructures showed enhanced characteristics, making them promising for energy generation applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Byoung-Uk Sohn, Yue-Xin Huang, Ju Won Choi, George F. R. Chen, Doris K. T. Ng, Shengyuan A. Yang, Dawn T. H. Tan
Summary: This research reports on the topological nonlinear parametric amplification in a dimerized coupled waveguide system. The high-speed transmission and low-power optical parametric amplification are achieved by exploiting the strong localization properties of the waveguide. Moreover, a mechanism for Kerr-induced control of the transition from topological boundary states to bulk states is demonstrated.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Ju Won Choi, Byoung-Uk Sohn, Ezgi Sahin, George F. R. Chen, Doris K. T. Ng, Benjamin J. Eggleton, Carel Martijn de Sterke, Dawn T. H. Tan
Summary: In this manuscript, a new approach for generating picosecond pulse trains from low power, continuous-wave light is introduced. This is achieved by utilizing cross-phase modulation technology in an ultra-silicon-rich nitride grating. The significance of this technique lies in its ability to generate high repetition rate ultrashort pulses from weak continuous-wave light.
Article
Multidisciplinary Sciences
Zhetao Jia, Matteo Secli, Alexander Avdoshkin, Walid Redjem, Elizabeth Dresselhaus, Joel Moore, Boubacar Kante
Summary: Complex networks are crucial in understanding phenomena like collective behavior of spins, neural networks, power grids, and disease spread. Recent studies have used topological phenomena in these networks to maintain system response in the presence of disorder. This article proposes and demonstrates topological structurally disordered systems with enhanced nonlinear phenomena in the topological channels. The construction of the graph and its dynamics significantly increase the rate of topologically protected photon pair generation. Disordered nonlinear topological graphs can enable advanced quantum interconnects, efficient nonlinear sources, and light-based information processing for artificial intelligence.
Article
Chemistry, Multidisciplinary
Guojun Zheng, Xiaofeng Liu, Jianhong Wu, Dao Zhang, Duoduo Zhang, Zhousu Xu, Yanxia Cui, Jianrong Qiu, Wieslaw Strek
Summary: The light emission driven by a near-infrared laser can be effectively modulated with nanoscale architecture in the medium, resulting in increased emission intensity and decreased threshold excitation density. The enhanced optical energy localization leads to improved photon-to-photon conversion efficiency.
ADVANCED MATERIALS
(2022)
Article
Quantum Science & Technology
Zu-Jian Ying
Summary: Universality is a common quality in physical systems that is rooted in the deep nature of certain parameters. This study explores the universality of different types: critical universality and topological universality in a single-qubit system with light-matter interactions. It is found that scaling relations and topological features can coexist in such a system, with different behavior at low and finite frequencies. The nonlinear Stark coupling is identified as another approach to manipulate topological transitions in addition to coupling anisotropy.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Editorial Material
Multidisciplinary Sciences
Han Cai, Da-Wei Wang
Summary: The text discusses the emerging research field of topological photonics, focusing on the topological states of classical light. It reveals the intrinsic topological phases related to the quantum nature of light, presents a model of Fock states, and demonstrates a transition between different phases induced by inhomogeneous coupling strengths. By extending the lattice to higher dimensions, it provides a novel platform for studying topological physics beyond three dimensions.
NATIONAL SCIENCE REVIEW
(2021)
Article
Astronomy & Astrophysics
Naoki Yamamoto, Ryo Yokokura
Summary: This paper investigates topological mass generation in gapped systems and analyzes axion electrodynamics, revealing the phenomenon of spontaneous breaking in the system. Through the background magnetic field, we derive the low-energy effective theory of gapped modes and validate chiral anomaly matching.
Article
Multidisciplinary Sciences
Guang-Can Li, Dangyuan Lei, Meng Qiu, Wei Jin, Sheng Lan, Anatoly Zayats
Summary: In nanoplasmonic systems, symmetry can often suppress the second harmonic generation (SHG) despite the highly enhanced fields. Here, the authors demonstrate light-induced symmetry breaking that enables strong SHG enhancement from symmetric nanophotonic systems with certain properties.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
A. V. Yulin, A. V. Poshakinskiy, A. N. Poddubny
Summary: The study theoretically investigates the interaction of optically-pumped excitons with acoustic waves in planar semiconductor nanostructures in the strongly nonlinear regime, predicting the formation and stability of optomechanical lasing and domain walls.
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Anastasiia Zalogina, Pavel Tonkaev, Aditya Tripathi, Hoo-Cheol Lee, Luca Carletti, Hong-Gyu Park, Sergey S. Kruk, Yuri Kivshar
Summary: Multiphoton processes of absorption photoluminescence have found diverse applications ranging from threedimensional microfabrication to biological imaging. However, studying higher-order photoluminescence processes at subwavelength scales has been challenging due to their low efficiency. In this study, we demonstrate the observation of five-photon luminescence from a single subwavelength nanoantenna at room temperature, enabled by the Mie resonances. The interaction of Mie multipolar modes at the subwavelength scale enhances the efficiency of five-photon luminescence by at least 4 orders of magnitude.
Article
Optics
Sergey S. Kruk, Lei Wang, Basudeb Sain, Zhaogang Dong, Joel Yang, Thomas Zentgraf, Yuri Kivshar
Summary: Assembling dissimilar nonlinear dielectric resonators into translucent metasurfaces, the asymmetric parametric generation of light in nonlinear metasurfaces is demonstrated, paving the way for innovative nanophotonic component designs.
Article
Optics
Daniel A. Bobylev, Dmitry Tikhonenko, Dmitry Zhirihin, Maxim Mazanov, Anton Vakulenko, Daria A. Smirnova, Alexander B. Khanikaev, Maxim A. Gorlach
Summary: The rapid development of topological concepts in photonics has revealed exotic phenomena such as unidirectional electromagnetic wave propagation and disorder-immune localization of light. Higher-order topological insulators (HOTIs) provide additional degrees of control over light confinement and steering. However, current designs of photonic HOTIs only exploit fixed lattice geometries, limiting their tunability. This article introduces a new mechanism for engineering topological edge and corner states using both electric and magnetic responses of meta-atoms. The alignment of these responses allows for the reconfiguration and tailoring of photonic band topology. Experimental demonstrations in microwave domains and numerical predictions further highlight the potential of this approach in inducing and controlling higher-order topological phases and states.
LASER & PHOTONICS REVIEWS
(2023)
Article
Engineering, Electrical & Electronic
Alberto Della Torre, Remi Armand, Milan Sinobad, Kokou Firmin Fiaboe, Barry Luther-Davies, Stephen Madden, Arnan Mitchell, Thach G. Nguyen, David Moss, Jean-Michel Hartmann, Vincent Reboud, Jean-Marc Fedeli, Christelle Monat, Christian Grillet
Summary: We successfully generated a broadband and flat mid-infrared supercontinuum in a silicon-germanium-on-silicon two-stage waveguide. Our design utilizing a short and narrow waveguide section and an inverse tapered section led to a broader and flatter supercontinuum with two spectrally shifted dispersive waves. The experimentally generated supercontinuum ranged from 2.4 to 5.5 µm, but numerical simulations predict it can extend to 7.8 µm. We demonstrated the potential of our supercontinuum for gas spectroscopy of water vapor and carbon dioxide.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Optics
Hooman Barati Sedeh, Danilo G. Pires, Nitish Chandra, Jiannan Gao, Dmitrii Tsvetkov, Pavel Terekhov, Ivan Kravchenko, Natalia Litchinitser
Summary: Structured lights, such as beams with spin and orbital angular momenta and various polarizations, have attracted interest for their unique properties in optical and quantum communications, micromanipulation, and imaging. Additionally, structured optical materials have opened new opportunities for controlling light flow and sensing. However, the interaction between structured light and complex-shaped materials has not been fully explored.
LASER & PHOTONICS REVIEWS
(2023)
Review
Optics
Polina R. Sharapova, Sergey S. Kruk, Alexander S. Solntsev
Summary: The generation of correlated and entangled photons through nonlinear light-matter interaction can be achieved by spontaneous parametric down-conversion or spontaneous four-wave mixing. The use of dielectric nanoresonators and metasurfaces enables the control of light in subwavelength volumes, enhancing the nonlinear light-matter interaction and generating entangled photons. This review discusses the recent progress in this emerging field of research.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Maria K. K. Kroychuk, Alexander S. S. Shorokhov, Damir F. F. Yagudin, Maxim V. V. Rakhlin, Grigorii V. V. Klimko, Alexey A. A. Toropov, Tatiana V. V. Shubina, Andrey A. A. Fedyanin
Summary: Single photon sources based on semiconductor quantum dots have great potential for optical quantum computing and cryptography. The use of Bragg resonators and resonant nanoclusters made of high-index dielectric materials allows for effective control over emission. Our experiments and calculations demonstrate the enhancement of quantum emitters' absorption efficiency in GaAs nanopillar oligomers with embedded InAs quantum dots, achieved through the excitation of magnetic Mie-type resonance. In addition, the nanoresonator at the wavelength of magnetic dipole resonance acts as a nanoantenna, providing control over the radiation spatial profile. These findings highlight the potential of using quantum dots coupled with Mie-resonant oligomers collective modes for the development of nanoscale single-photon sources.
Article
Chemistry, Multidisciplinary
Aditya Tripathi, Anastasiia Zalogina, Jiayan Liao, Matthias Wurdack, Eliezer Estrecho, Jiajia Zhou, Dayong Jin, Sergey S. Kruk, Yuri Kivshar
Summary: We demonstrate the effect of spin-momentum locking on upconversion photoluminescence emitted from rare-earth doped nanocrystals coupled to a phase-gradient dielectric metasurface. Different directionalities for left and right circular polarized light are observed, which can be attributed to the photonic Rashba effect that leads to a spin-dependent splitting of emitted light in momentum space.
Article
Nanoscience & Nanotechnology
Svetlana Kiriushechkina, Anton Vakulenko, Daria Smirnova, Sriram Guddala, Yuma Kawaguchi, Filipp Komissarenko, Monica Allen, Jeffery Allen, Alexander B. Khanikaev
Summary: Photonic Dirac metasurfaces with smooth trapping potentials guide optical modes endowed with pseudo-spin. Such potentials give rise to different radiative properties of modes of opposite pseudo-spin. The spin-dependent field distributions and radiative lifetimes of their guided modes indicate that photonic Dirac metasurfaces could be used for spin-multiplexing, controlling the characteristics of optical guided modes, and tuning light-matter interactions with photonic pseudo-spins.
NATURE NANOTECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Pavel Tonkaev, Kirill Koshelev, Mikhail A. Masharin, Sergey V. Makarov, Sergey S. Kruk, Yuri Kivshar
Summary: Lead halide perovskites are widely used in photonic and light-emitting devices due to their rich optoelectronic properties and ease of fabrication. By utilizing the optical resonances of structured surfaces, known as metasurfaces, the nonlinear response of perovskites can be enhanced as dielectric photonic materials. In this study, we demonstrate enhanced fifth harmonic generation in MAPbBr3 halide perovskite nonlocal metasurfaces, achieving a two orders of magnitude increase compared to unpatterned MAPbBr3 films of the same thickness. Our work suggests a novel approach for efficient parametric processes in resonant dielectric structures.
Article
Multidisciplinary Sciences
Kai Chen, Filipp Komissarenko, Daria Smirnova, Anton Vakulenko, Svetlana Kiriushechkina, Irina Volkovskaya, Sriram Guddala, Vinod Menon, Andrea Alu, Alexander B. Khanikaev
Summary: Photonics has emerged as a strong platform for emulating relativistic phenomena. In this study, we demonstrate the realization of relativistic-like trapping in a photonic system, with the formation of photonic modes that possess unique characteristics similar to atomic orbitals. These modes exhibit features such as pseudo-particle-Hall symmetry, spin degeneracy, and topological charge, and can be selectively excited by pseudo-spin-polarized boundary states. This research not only enhances our understanding of the structure of these pseudo-relativistic orbitals, but also opens up new possibilities for designing nanophotonic devices and topological light sources compatible with integrated photonics platforms.
Article
Multidisciplinary Sciences
Anastasiia Zalogina, Luca Carletti, Anton Rudenko, Jerome Moloney, Aditya Tripathi, Hoo-Cheol Lee, Ilya Shadrivov, Hong-Gyu Park, Yuri Kivshar, Sergey S. Kruk
Summary: Higher-order optical harmonics have been observed in nanostructured solids such as optical gratings and metasurfaces. By structuring materials at the subwavelength scale, we can enhance nonlinear processes and reduce the size of high-harmonic sources. In our study, we generated up to a seventh harmonic from a single subwavelength resonator made of AlGaAs material. This was achieved by carefully engineering the resonator geometry and exciting the resonant modes with an azimuthally polarized tightly focused beam.
Article
Engineering, Electrical & Electronic
Yuan Qin, Ming Xiao, Ruizhe Zhang, Qingyun Xie, Tomas Palacios, Boyan Wang, Yunwei Ma, Ivan Kravchenko, Dayrl P. Briggs, Dale K. Hensley, Bernadeta R. Srijanto, Yuhao Zhang
Summary: This work presents the fabrication of quasi-vertical GaN Schottky barrier diodes (SBDs) on a 6-inch Si substrate with a record-breaking breakdown voltage (BV) of over 1 kV. The novel use of a deep mesa in quasi-vertical devices allows for a self-aligned edge termination, and the mesa sidewall is covered by p-type nickel oxide (NiO) to reduce the surface field. The device exhibits a parallel-plane junction electric field of 2.8 MV/cm, along with low turn-on voltage and specific on-resistance. Additionally, it demonstrates excellent overvoltage robustness under continuous stress.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Physics, Multidisciplinary
Lars Klompmaker, Alexander N. Poddubny, Eyup Yalcin, Leonid Litvin, Ralf Jede, Grzegorz Karczewski, Sergij Chusnutdinow, Tomasz Wojtowicz, Dmitri R. Yakovlev, Manfred Bayer, Ilya A. Akimov
Summary: This study experimentally and theoretically investigates the temperature dependence of transverse magnetic routing of light emission in hybrid plasmonic-semiconductor quantum well structures. The results show that the directionality of emission can be controlled by adjusting the magnetic field, which has potential applications.
PHYSICAL REVIEW RESEARCH
(2022)