Results 71 to 80 of about 22,235 (140)
All‐Dielectric Metawaveguide Ring Resonators with Deeply Sub‐Diffractive Mode Volumes
Laser &Photonics Reviews, EarlyView.This article presents the theory, simulation, and experimental realization of whispering gallery mode resonators capable of achieving deeply sub‐diffractive mode volumes, V << 2πR(λ0/2n)2, while preserving high Q factors. Rather than relying on plasmonics to reduce the mode volume, this work relies on nanostructured all‐dielectric metamaterial ...
Saddam Gafsi, Judson D. Ryckman
wiley +1 more source
Optical Metasurfaces for the Next‐Generation Biosensing and Bioimaging
Laser &Photonics Reviews, EarlyView.Recent advances in this understanding of light‐matter interactions, combined with innovations in the design and fabrication of large‐scale nanostructured metasurfaces, have enabled transformative approaches to biosensing and bioimaging. This review explores innovations in refractometric sensing, surface‐enhanced spectroscopy, and super‐resolution ...
Anthony J. El‐Helou +6 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.Maximized emission enhancement is experimentally achieved using critical coupling in Brillouin zone folding metasurfaces. Maximized enhancements of polarized and unpolarized emissions from quantum dot‐coated dielectric metasurfaces are demonstrated in the normal direction.
Jungho Han +4 more
wiley +1 more source
Reflections on the Spatial Exponential Growth of Electromagnetic Quasinormal Modes
Laser &Photonics Reviews, EarlyView.Quasinormal modes (QNMs) offer a robust framework for understanding the physics of resonators. However, conceptual challenges arise in regions distant from resonators, where QNM fields exponentially grow. This growth is not unphysical, but gives rise to counterintuitive effects, which is explained by examining fundamentals of non‐Hermitian systems ...
Tong Wu +2 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.The study presents the latest results on single‐mode VCSELs with record current induced wavelength tuning using a grating structure as part of the top coupling mirror. The grating structure is monolithically integrated using only one fabrication layer and provides mono linearly polarized emission as well as supreme side‐mode suppression such that ...
Niels Heermeier +6 more
wiley +1 more source
3D Dielectric Chiral Metamaterials Achieving Nondispersive Near‐Zero Ellipticity
Laser &Photonics Reviews, EarlyView.Broadband and high‐transmission‐efficiency optical activity (OA) is a critical functionality for numerous applications but is challenging to achieve. By engineering circularly polarized (CP) eigenstates in three‐dimensional (3D) dielectric helices, a 3D‐printed ceramic metamaterial is demonstrated for broadband OA with nondispersive near‐zero ...
Kang Du +8 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.Polarization standing waves (PSWs) created by broadband counter‐propagating light beams offer a flexible and efficient method for encoding complex and customizable structures in photosensitive materials with finely tunable periodicities and nanometric resolution.
Biagio Audia +3 more
wiley +1 more source
Golden Vaterite as a Thermo‐Optical Agent
Laser &Photonics Reviews, EarlyView.Thermo‐optical therapeutic approaches offer new capabilities in targeted drug delivery, cancer therapy, and tissue engineering applications. The thermo‐optical characteristics of a mesoporous calcium carbonate loaded with gold nanoparticles are explored, thereby forming a metamaterial capsule. Auxiliary optomechanical tools enable efficient prototyping
Andrei Ushkov +4 more
wiley +1 more source
Enhancing MXene Multipolar Resonances Through Metasurface Lattice Engineering
Nano Select, EarlyView.We explore multipolar resonances across the visible and infrared spectra, demonstrating their control via lattice effects and tailored scattering elements within the MXene metasurface. We show that periodic lattice arrays enable strong localized resonances driven by the collective behavior of individual nanoresonators, and we show effective control ...
Vahid Karimi +3 more
wiley +1 more source
Advanced Characterization of the Spatial Variation of Moiré Heterostructures and Moiré Excitons
Small, EarlyView.In this review, the authors discuss recent advanced tools to characterize and understand the effects of spatial variation and inhomogeneities in moiré heterostructures over multiple length scales. Emphasis is placed on correlating the impact of twist angle misalignment, nano‐scale disorder, and atomic relaxation on the moiré potential and moiré ...
Alberto de la Torre +3 more
wiley +1 more source