Article
Chemistry, Physical
Haixia Xu, Mingli Yang, Yihang Chen
Summary: In this study, a strong coupling system consisting of a polar dielectric GaAs nanolayer and a graphene sheet is proposed. Both the epsilon-near-zero (ENZ) mode and graphene plasmon (GP) mode can be excited in this system and strongly couple with each other. The hybridized ENZ-GP modes exhibit long propagation length and strong optical field confinement.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Paul Goulain, Chris Deimert, Mathieu Jeannin, Stefano Pirotta, Wojciech Julian Pasek, Zbigniew Wasilewski, Raffaele Colombelli, Jean-Michel Manceau
Summary: Continuously graded parabolic quantum wells are used to overcome the limitations of square quantum wells at terahertz frequencies. Microcavity intersubband polaritons are formed at frequencies as low as 1.8 THz, with ultra-strong coupling sustained up to 200 K. The use of sub-wavelength resonators preserves the ultra-strong coupling regime, making it a potential approach for generating non-classical light.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Daehan Yoo, Fernando de Leon-Perez, Matthew Pelton, In-Ho Lee, Daniel A. Mohr, Markus B. Raschke, Joshua D. Caldwell, Luis Martin-Moreno, Sang-Hyun Oh
Summary: Research demonstrates that ultrastrong coupling between phonons and gap plasmons in nanocavities can lead to a modal splitting of up to 50% of the resonant frequency, opening up new possibilities for ultrastrong coupling applications.
Article
Chemistry, Multidisciplinary
Zhaolong Cao, Jianfa Chen, Shaozhi Deng, Huanjun Chen
Summary: Understanding the physical origins of chiroptical responses in artificial optically active media is crucial for developing high-performance circular dichroism spectroscopic techniques. In this study, a biorthogonal approach based on temporal coupled-mode theory is presented to explain the underlying physics of chiral metasurfaces. It is found that the intrinsic chirality of coupled chiral nanocavities arises from the asymmetric coupling between interlayer cross-polarized resonant modes and coherent interference between doubly degenerate states.
Article
Multidisciplinary Sciences
Hai Hu, Na Chen, Hanchao Teng, Renwen Yu, Mengfei Xue, Ke Chen, Yuchuan Xiao, Yunpeng Qu, Debo Hu, Jianing Chen, Zhipei Sun, Peining Li, F. Javier Garcia de Abajo, Qing Dai
Summary: Negative refraction is achieved using hybrid topological polaritons in van der Waals heterostructures, allowing for gate-tunable manipulation of mid-infrared radiation. Wide-angle negatively refracted polaritons are observed in partially decorated a-MoO3 films with graphene, demonstrating reversible nanoscale focusing. This technique offers possibilities for electrically tunable super-resolution imaging, nanoscale thermal manipulation, enhanced molecular sensing, and on-chip optical circuitry.
Article
Optics
Xingguo Zheng, Jingrui Wu, Jinhua Zhang, Anqi Yu, Yinghao Yuan, Xuguang Guo, Yiming Zhu
Summary: Hybrid optical-plasmonic modes with low loss and small mode volume are investigated in this study for their localization and enhancement of the electromagnetic field. The terahertz (THz) hybrid modes of Fabry-Perot resonances (FPRs) and spoof surface plasmon polaritons (SSPPs) in the modified Otto scheme are explored theoretically and experimentally. The resonant frequency of the FPR-SSPP modes can be tuned by varying the thickness of the air gap. The hybrid modes show a significant enhancement of electromagnetic energy in the grooves of the metal slit grating. These hybrid modes have potential applications in high-sensitivity THz sensors and detectors.
Article
Optics
Hongyan Peng, Xuan-Zhang Wang
Summary: Surface polaritons in a metamaterial composed of polar-crystal layers and antiferromagnetic layers were investigated. Two surface polaritons, a unique ghost surface polariton (GSP) and a surface hybrid-polarization polariton (SHP), were predicted in a specific geometry. The magnetic field can switch or transition between the two surface polaritons, which are magnetically tunable.
Article
Chemistry, Physical
Clara Bujalance, Victoria Esteso, Laura Calio, Giulia Lavarda, Tomas Torres, Johannes Feist, Francisco Jose Garcia-Vidal, Giovanni Bottari, Hernan Miguez
Summary: Organic polaritonic solar cells utilize the hybridization of sunlight absorbers and resonator photon modes through strong coupling to control and enhance performance of the devices. Rational design of the layered structure is crucial for optimizing both spectral and angular response of sunlight harvester dyes in ultrastrong coupling regime.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Zahra Torbatian, Dino Novko, Reza Asgari
Summary: In this study, we investigated the characteristic of two-dimensional plasmon modes and hyperbolic properties of two phases of single-layer boron (hr-sB and 8 Pmmn borophene) using first-principles calculations and many-body perturbation theory. The results show high carrier density and strong hyperbolic plasmon modes in the visible part of the spectrum for hr-sB borophene, while 8Pmmn borophene exhibits anisotropic Dirac plasmons in the mid-infrared. The impact of electron-phonon coupling and Landau damping on these hyperbolic plasmon modes was also explored, demonstrating the potential of borophene for low-loss broadband surface plasmon polariton devices.
Article
Engineering, Electrical & Electronic
Abdelgader A. Alsalhin, Brian A. Lail
Summary: Hyperbolic metamaterials (HMM) are a new class of materials for nanophotonics with a wide range of potential technologies, where engineering the features as a function of host geometry can illustrate exotic functionalities. Phonon polaritons (PhPs) and plasmon polaritons (PPs) are common results from light-matter interactions, with accurate analysis enabling the design of tailored devices with high dispersion. This study explores coupling scenarios between gold (Au) and hexagonal boron nitride (hBN) rods, presenting a novel procedure for optimal design of IR sensing devices.
IEEE SENSORS JOURNAL
(2021)
Article
Multidisciplinary Sciences
Irene Dolado, Carlos Maciel-Escudero, Elizaveta Nikulina, Evgenii Modin, Francesco Calavalle, Shu Chen, Andrei Bylinkin, Francisco Javier Alfaro-Mozaz, Jiahan Li, James H. Edgar, Felix Casanova, Saul Velez, Luis E. Hueso, Ruben Esteban, Javier Aizpurua, Rainer Hillenbrand
Summary: In this study, nanoscale mapping of vibrational strong coupling between organic molecules and nanoresonators is achieved by remote near-field spectroscopy. The results demonstrate the localized hybrid polariton modes and coupling strengths on a single nanoresonator level, providing insights into the nanoscale vibrational strong coupling phenomenon.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Arumugam Sangeetha, Kanagaraj Reivanth, Thankappan Thrupthika, Subramaniam Ramya, Devaraj Nataraj
Summary: The formation of plasmon-exciton polaritons was observed in the AgTe/CdTe Quantum Dot (QD) solid system, achieving strong coupling regime. The study also investigated the formation and dynamics of this hybrid state of matter through various experiments.
SCIENTIFIC REPORTS
(2023)
Article
Physics, Applied
Tinghe Yun, Eliezer Estrecho, Andrew G. Truscott, Elena A. Ostrovskaya, Matthias J. Wurdack
Summary: This study presents a scalable approach to fabricate high-quality planar microcavities with an integrated monolayer WS2 layer-by-layer using PMMA/SiOx as a cavity spacer. The microcavities demonstrated strong light-matter coupling at room temperature, making it an important step towards fabricating wafer-scale and patterned microcavities for engineering the exciton-polariton potential landscape.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Philip A. Thomas, Kishan S. Menghrajani, William L. Barnes
Summary: The study demonstrates that external structures are unnecessary for achieving room-temperature ultrastrong light-matter coupling. This discovery could aid in the design of experiments to probe polaritonic chemistry and suggests that polaritonic states may be easier to realize than previously thought.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Optics
Qiuming Zeng, Yi Huang, Shuncong Zhong, Tingting Shi, Jianxiong Chen, Yujie Zhong, Tingling Lin, Xuefeng Chen
Summary: This study presents an innovative method to achieve broadband filtering at terahertz frequencies by manipulating the interaction between two localized surface plasmon polariton modes using multiscale-coupled plasmonic fields. The integration of strong coupling and far-field interference expands the transmission range and enhances the capability of the double-layer metamaterial for broadband filtering.
OPTICS AND LASER TECHNOLOGY
(2024)
