This Letter presents a theory of extraordinary optical transmission (EOT) through a rectangular hole filled with the extreme uniaxial metamaterials with infinite longitudinal components of permittivity (ϵ) and permeability (μ). We demonstrate theoretically and numerically that a number of high-order transverse electromagnetic (TEM) modes can be supported by such a structure, and that, more interestingly, their normalized transmittance can be remarkably enhanced due to the Fabry-Perot resonance effect. A set of illustrative examples has been provided to demonstrate that such an EOT property could be explored for the purpose of subwavelength-resolution imaging.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.42.002386 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Carboxyl and carbonyl groups of carbon dots co-coordinated assembly with Al to emission-enhanced aggregates for sensitive sensing and efficient removal.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China; Natural Product Research Laboratory, Guangxi Baise High-tech Development Zone, Baise 533612, Guangxi, China. Electronic address:
It is very challenging to prepare carbon dots (CDs) with aggregation-induced emission (AIE) property for simultaneous sensitive sensing and efficient removal. Herein, blue-emission CDs were facilely prepared by one-step solvothermal treatment of vine tea. Optical characterizations demonstrated that AIE phenomenon of CDs came from the restricted intramolecular motion.
View Article and Find Full Text PDFHigh-integrated photonic tensor core utilizing high-dimensional lightwave and microwave multidomain multiplexing.
Light Sci Appl
January 2025
Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China.
The burgeoning volume of parameters in artificial neural network models has posed substantial challenges to conventional tensor computing hardware. Benefiting from the available optical multidimensional information entropy, optical intelligent computing is used as an alternative solution to address the emerging challenges of electrical computing. These limitations, in terms of device size and photonic integration scale, have hindered the performance of optical chips.
View Article and Find Full Text PDFThe increasing demand for controlling electromagnetic waves has led to the construction of a variety of metasurface absorbers with different functionalities. In this Letter, we designed a kind of single-layer metasurfaces with delicately designed hybrid magnetic meta-atoms (HMMAs), which can be operated as perfect absorbers (PAs) for the electromagnetic wave incident at a specified direction, but at the mirror symmetric direction, the nearly total reflection is achieved. This remarkable nonreciprocal phenomenon arises from the time-reversal symmetry (TRS) breaking nature of magnetic surface plasmon as well as the lattice Kerker effect due to the interaction of HMMAs in the single-layer metasurfaces.
View Article and Find Full Text PDFChiral Light-Matter Interactions with Thermal Magnetoplasmons in Graphene Nanodisks.
Nano Lett
December 2024
Instituto de Química Física Blas Cabrera (IQF), CSIC, 28006 Madrid, Spain.
We investigate the emergence of self-hybridized thermal magnetoplasmons in doped graphene nanodisks at finite temperatures upon being subjected to an external magnetic field. Using a semianalytical approach, which fully describes the eigenmodes and polarizability of the graphene nanodisks, we show that the hybridization originates from the coupling of transitions between thermally populated Landau levels and localized magnetoplasmon resonances of the nanodisks. Owing to their origin, these modes combine the extraordinary magneto-optical response of graphene with the strong field enhancement of plasmons, making them an ideal tool for achieving strong chiral light-matter interactions, with the additional advantage of being tunable through carrier concentration, magnetic field, and temperature.
View Article and Find Full Text PDFNIR-II upconversion nanomaterials for biomedical applications.
Nanoscale
December 2024
Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.
As a nonlinear optical phenomenon, upconversion (UC) occurs when two or more low-energy excitation photons are sequentially absorbed and emitted. Upconversion nanomaterials exhibit superior photostability, non-invasiveness, a unique near-infrared anti-Stokes shift, and enhanced tissue penetration capability. However, general upconversion nanomaterials typically utilize visible light (400-700 nm) for excitation, leading to limited tissue penetration, background signal interference, limited excitation efficiency and imaging quality issues due to tissue absorption and scattering.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!