Article
Physics, Multidisciplinary
Xiaorun Zang, Andriy Shevchenko
Summary: This study explores further enhancement of near-field enhancement by placing a metal-dielectric slab waveguide beneath the lattice of metal nanoparticles. Numerical simulations show that this approach can significantly increase the near-field intensity, providing an 80-fold increase over single-particle plasmon resonance and a 7-fold increase over lattice-resonance enhancement. This enhancement mechanism can be used to design extraordinarily efficient nonlocal optical metasurfaces for various applications.
NEW JOURNAL OF PHYSICS
(2023)
Article
Optics
Yinghui Ren, Xiaogang Wang, Chijie Xiao
Summary: To address the issue of high attenuation in terahertz wave propagation in air, a split ring resonator (SRR) structure is proposed. It consists of a subwavelength slit and a circular cavity to support coupling resonant modes and achieve a remarkable omnidirectional electromagnetic signals gain at 0.4 THz. Additionally, a new analytic approach based on the Bruijn method is developed to predict field enhancement dependence on key geometric parameters of the SRR, paving the way for direct detection and transmission of enhanced THz signals in future communication systems.
Article
Multidisciplinary Sciences
Sergey G. Menabde, Sergejs Boroviks, Jongtae Ahn, Jacob T. Heiden, Kenji Watanabe, Takashi Taniguchi, Tony Low, Do Kyung Hwang, N. Asger Mortensen, Min Seok Jang
Summary: This research uses large-area monocrystalline gold flakes as a low-loss substrate for image polaritons, accurately measures the complex propagation constant of polaritons in van der Waals crystals, and finds that the propagation loss and normalized propagation length of image phonon-polaritons have specific spectral dependencies.
Article
Multidisciplinary Sciences
Nicholas A. Gusken, Ming Fu, Maximilian Zapf, Michael P. Nielsen, Paul Dichtl, Robert Roeder, Alex S. Clark, Stefan A. Maier, Carsten Ronning, Rupert F. Oulton
Summary: Since Purcell's seminal report 75 years ago, electromagnetic resonators have been used to control light-matter interactions to make brighter radiation sources and unleash unprecedented control over quantum states of light and matter. In this letter, the authors report a strong radiative emission rate enhancement of Er3+-ions across the telecommunications C-band in a single plasmonic waveguide based on the Purcell effect. The waveguide uses a reverse nanofocusing approach to efficiently enhance, extract, and guide emission from the nanoscale to a photonic waveguide, while keeping losses at a minimum.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Fengsheng Sun, Wuchao Huang, Zebo Zheng, Ningsheng Xu, Yanlin Ke, Runze Zhan, Huanjun Chen, Shaozhi Deng
Summary: In this study, an analytical waveguide model is developed to describe polariton propagations in van der Waals crystals. The model is verified by real-space optical nano-imaging and numerical simulation, providing an analytical rationale for understanding the localized electromagnetic fields associated with polaritons in van der Waals crystals. The proposed model is applicable to other polaritonic crystals within the van der Waals family with corresponding dielectric substitutions.
Review
Optics
Li Hu, Zhiguang Sun, Yingdong Nie, Yingzhou Huang, Yurui Fang
Summary: Chiral near-fields, generated or enhanced by plasmonic and photonic nanostructures, serve as a bridge between chiral molecules and light wavelengths. They have significant applications in chiral molecule detection and optical force generation.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Vishal Sorathiya, Osama S. Faragallah, Hala S. El-Sayed, Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed
Summary: This article introduces a novel method for achieving nanofocusing from single-mode fiber to photonic crystal. By using a staircase structure, nanofocusing in the range of nanometers has been achieved. The mathematical modeling of the nanofocusing structure is also demonstrated and compared with simulation results.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Optics
Fanfan Lu, Wending Zhang, Lixun Sun, Ting Mei, Xiaocong Yuan
Summary: A substrate with a circular nanocavity is proposed in this study to enhance the nanofocusing and optical trapping characteristics of plasmonic tip nanofocusing. Experimental results show that the electric field intensity can be further increased on this substrate, allowing for stable trapping of small nanoparticles.
Article
Multidisciplinary Sciences
A. T. Costa, P. A. D. Goncalves, D. N. Basov, Frank H. L. Koppens, N. Asger Mortensen, N. M. R. Peres
Summary: The Higgs mode of a superconductor, difficult to observe by far-field optics, can be clearly visible using near-field optics and ultraconfined graphene plasmons. The coupling to the Higgs mode is clearly visible in both cases of graphene plasmons and quantum emitters, offering experimental knobs for studying the electrodynamics of superconductors.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Optics
Penghua Ma, Kaizhen Liu, Guangyan Huang, Youyi Ding, Wei Du, Tao Wang
Summary: This study demonstrates vibrational strong coupling (VSC) between organic molecular vibrations and mid-infrared plasmons on metallic antennas using quartz as an epsilon-near-zero (ENZ) substrate. The coupling strength is proportional to the square root of the PMMA layer thickness and is influenced by the polarization of the incident light. These findings present a new possibility for achieving VSC with metallic antennas and pave the way for enhancing the sensitivity of molecular vibrational spectroscopy.
Article
Chemistry, Multidisciplinary
Divya Virmani, Andrei Bylinkin, Irene Dolado, Eli Janzen, James H. Edgar, Rainer Hillenbrand
Summary: Polaritons enable strong light-matter coupling for sensitive analysis of (bio)chemical substances and processes. This study describes two setups for polariton nanoimaging and spectroscopy in liquid, showcasing the potential for manifold applications in studying strong coupling between polaritons and molecular vibrations or chemical reactions. The results lay the foundation for future applications of s-SNOM-based polariton interferometry in liquid environments.
Article
Engineering, Electrical & Electronic
Fanfan Lu, Wending Zhang, Min Liu, Lu Zhang, Ting Mei
Summary: Tip-based plasmonic nanofocusing is a novel optical microscope integrating surface plasmons and a sharp metal tip, which generates highly localized enhanced electric field and provides morphological information. This technique can be used to understand the nano-world, including spatial structures of chemicals and physical, electronic, and catalytic properties of substances.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Hongxin Zhao, Feiyu Ge, Qiuyi Zhang, Shunli Li, Xiaoxing Yin
Summary: An endfire frequency scanning tapered slot antenna with an asymmetrical inner edge is proposed, allowing the antenna to excite two modes with different phase constants and scan through the endfire direction.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Materials Science, Multidisciplinary
Huihai Wu, Xiaochuan Liu, Yuepei Cai, Longji Cui, Yong Huang
Summary: This paper investigates the near-field radiative heat transfer in three-dimensional topological insulators (3D TIs) and demonstrates the potential of 3D TIs in manipulating near-field thermal radiation by controlling the coupling between surface and bulk states. The findings provide useful insights for energy conversion and thermal management.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
David Kordahl, Duncan T. L. Alexander, Christian Dwyer
Summary: The majority of works in nanomaterial analysis focus on collective or single-particle excitations described by the electrostatic approximation, neglecting retardation and magnetic field effects. However, in some cases, this approximation is fundamentally inadequate when beam energy exceeds certain threshold values and sample dimensions are comparable to the wavelength of light in the material. In these situations, spatial variations in low-loss spectral maps from guided light modes may be observed.
Article
Physics, Applied
Rasmus E. Jacobsen, Andrei V. Lavrinenko, Samel Arslanagic
Summary: Resonant elements are crucial for tailoring the radiation and scattering properties of devices like antennas and functional material platforms. In this study, a simple resonator composed of a dielectric cylinder and an impedance surface is shown to support multiple scattering states. By carefully adjusting its geometry, the resonator can enhance and direct scattering, or suppress scattering to create anapole states. A prototype of the resonator using water as the dielectric and a metallic tube with slits as the impedance surface has been tested at microwave frequencies, demonstrating its flexibility in achieving different scattering responses. This resonator design has significant implications for antenna design and functional material platforms in various frequency domains, including THz and optical frequencies using high-permittivity dielectrics and graphene/nano-particle surfaces.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Larissa Vertchenko, Maxim Nikitin, Andrei Lavrinenko
Summary: The rise of photonics is driven by the need for miniaturization and faster communications, with the promise of high-speed and low-heat light circuits. Near-zero-index materials have attracted attention due to their unique electromagnetic properties, including electric field enhancement and extraordinary transmission in photonic waveguides. In such materials, light propagates with constant phase, showing promise for quantum photonics where information is preserved instead of degraded by the environment. However, realizing these properties remains challenging due to the specific geometries required by the effective medium theory.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Mariia Matiushechkina, Andrey B. Evlyukhin, Vladimir A. Zenin, Michele Heurs, Boris N. Chichkov
Summary: To implement high-efficiency Si-nanosphere metasurface mirrors in gravitational wave detectors, the exact dimensional and configuration parameters of the total system need to be determined beforehand. The reflective properties and limitations of multi-layer metasurfaces with embedded Si nanoparticles should be investigated. This study demonstrates how the substrate and protective layer influence optical properties, as well as how dimensional and material characteristics affect light reflectivity. Manufacturing imperfections, such as variations in Si nanoparticle sizes and placement, are also considered, along with methods to maintain high reflectivity under different conditions.
Article
Physics, Multidisciplinary
S. Bozhevolnyi, I. M. Suslov
Summary: Localization of electrons in 1D disordered systems is often described using the random phase approximation, assuming uniform distributions of phase f and Φ in the transfer matrix. However, in the general case, the random phase approximation is not valid and the evolution equations are written in terms of the Landauer resistance Φ and the combined phases Φ = Φ - f and Φ = Φ + f. The distribution of phase Φ exhibits an unusual phase transition at the point Φ0.
Review
Materials Science, Multidisciplinary
Yinhui Kan, Sergey I. I. Bozhevolnyi
Summary: Spontaneous photon emission can be significantly modified by using quantum emitters in nanostructured environment, resulting in enhanced emission rates and directed single-photon beams with well-defined polarization states. Recent advances in single-photon generation engineering demonstrate important possibilities for quantum information technologies. Optical metasurfaces offer complete control over optical fields and have the potential to shape single-photon emission. This article provides an overview of recent progress in utilizing quantum optical metasurfaces for enhanced and directed emission of single photons with specified polarization properties.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yinhui Kan, Xujing Liu, Shailesh Kumar, Sergey I. Bozhevolnyi
Summary: This paper develops a holography-based approach to flexibly design QE-coupled metasurfaces on-chip, which generate far-field quantum emission with specific spin and orbital angular momenta. The method enables multichannel quantum emission with multiple degrees of freedoms, providing a powerful platform for quantum nanophotonics.
Article
Chemistry, Multidisciplinary
Xujing Liu, Yinhui Kan, Shailesh Kumar, Liudmilla F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Changying Zhao, Sergey I. Bozhevolnyi
Summary: This article introduces a new design for ultracompact single-photon sources, which can generate linearly polarized vortex beams using quantum emitter-coupled metasurfaces. The authors successfully demonstrate on-chip single-photon generation and realize the multiplexing of different topological charges of orthogonal linearly polarized single photons through multiple channels, demonstrating their entanglement. This research suggests that ultracompact quantum emitter-coupled metasurfaces have the potential to be a new quantum optics platform for chip-integrated high-dimensional single-photon sources.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
P. Franceschini, A. Tognazzi, G. Finco, L. Carletti, I. Alessandri, A. C. Cino, C. De Angelis, O. Takayama, R. Malureanu, A. V. Lavrinenko, D. de Ceglia
Summary: Subwavelength control of electromagnetic field distribution is a current challenge in photonics research. Diffractive metasurfaces with spatially extended resonant modes have recently gained interest for their versatility in shaping the electromagnetic field. In this study, we design a nonlocal metasurface with modes in the third operating spectral window of optical communications. The optical properties are investigated through experiments and simulations, revealing the magnetic and electric nature of the modes.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Larissa Vertchenko, Andrei Lavrinenko
Summary: Direct simulations demonstrate that materials with low refractive index have superior efficiency in third harmonic generation compared to epsilon-near-zero (ENZ) materials, and they naturally satisfy phase-matching conditions. Silicon-based photonic crystals can effectively generate third harmonic waves, providing a simplified approach to on-chip linear and nonlinear circuitry and reducing potential sources of losses by unifying the production chain with the same material, such as silicon.
LASER & PHOTONICS REVIEWS
(2023)
Article
Physics, Multidisciplinary
Henrik Parsamyan, Torgom Yezekyan, Khachatur Nerkararyan, Sergey Bozhevolnyi
Summary: Scanning near-field optical microscopy (SNOM) is a powerful optical technique for visualizing surface nanostructures and fields beyond the diffraction limit. The resolution of SNOM is theoretically unlimited but limited in practice due to background light scattering. This article proposes using a "dark" SNOM probe to suppress background scattering and improve sensitivity and resolution for nano-optical characterization.
NEW JOURNAL OF PHYSICS
(2023)
Article
Energy & Fuels
Anisha Chirumamilla, Fei Ding, Yuanqing Yang, Murugan Senthil Mani Rajan, Sergey I. Bozhevolnyi, Duncan S. Sutherland, Kjeld Pedersen, Manohar Chirumamilla
Summary: In this study, a simple large-area nanofabrication method was proposed to create tungsten nanodisc spectrally-selective emitters with high emissivity and thermal stability. The method showed invariance to changes in polarization and incidence angles. This research is significant in advancing the implementation of photonic/plasmonic thermal emitters in high-temperature stable and efficient thermal energy harvesting systems.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Multidisciplinary Sciences
Danylo Komisar, Shailesh Kumar, Yinhui Kan, Chao Meng, Liudmila F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Sergey I. Bozhevolnyi
Summary: This article presents a method for channeling and controlling the emission direction and polarization characteristics of single photons using plasmonic holographic metasurfaces. Experimental results demonstrate the efficient generation of two well-collimated single-photon beams on a chip, with independent direction and polarization control for each channel by coupling quantum emitters to plasmonic holographic metasurfaces.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Leonid Yu. Beliaev, Sungyeong Kim, Bjorn Funch Schroder Nielsen, Mads Vejlgaard Evensen, Ada-Ioana Bunea, Radu Malureanu, Lars Renei Lindvold, Osamu Takayama, Peter E. Andersen, Andrei V. Lavrinenko
Summary: Optical sensors are efficient tools used to detect various types of analytes. High-contrast gratings (HCGs) are nanoscale devices that exhibit sharp optical resonances and can be used to detect biomarkers. Among different HCG structures, pedestal HCGs have higher bulk refractive index sensitivity, while half-buried HCGs have higher surface sensitivity. Both types of HCGs were used for optical biosensing of the cardiac biomarker myoglobin, and the half-buried HCGs showed slightly lower limit of detection compared to pedestal HCGs.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Torgom Yezekyan, Vladimir A. Zenin, Martin Thomaschewski, Radu Malureanu, Sergey I. Bozhevolnyi
Summary: The demand for broadband near-infrared photodetections with high responsivity is increasing, but its realization remains a technological challenge. We demonstrate a simple design approach to fabricate a Ge photodetector that significantly enhances absorption and detector responsivity for a wide range of wavelengths. Our approach utilizes Ge disks of different diameters, resulting in nearly two orders of magnitude improvement compared to unstructured Ge photodetectors.
