Open optical cavities based on metasurfaces

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August undefined, 2024

WebThe optical cavity has a stronger effect on the gain of a FEL than in most conventional lasers and the gain can also affect the optical mode. The gain is maximized for an … WebWhile previous tunable metasurfaces were based mainly on tuning of dielectric permittivity or losses in associated tunable elements, here we propose gain-assisted tunable metasurfaces as optical modulators with high ON–OFF ratio. They consist of a dye-doped film placed within metal-insulator-metal (MIM) cavities.

Label-free sensing of ultralow-weight molecules with all-dielectric ...

Web10 de abr. de 2024 · ABSTRACT. Spectral sensing is an emerging field driven by the need for fast and non-invasive methods for the chemical analysis of materials in agri-food, healthcare, and industrial applications. We demonstrate a near-infrared spectral sensor, based on a scalable fabrication process and combining high responsivity, narrow … Web15 de nov. de 2024 · In addition, the nano-cavities with embedded metasurfaces can support independently tunable resonances at multiple bands. As a proof-of-concept, … latenna

Open Cavity - an overview ScienceDirect Topics

Web22 de dez. de 2024 · Meta-optics is based on subwavelength-patterned surfaces, called metasurfaces, which acquire optical functionalities through the scattering of nanoparticles rather than by refraction.... WebIn this paper, a side-coupled triangle cavity in a plasmonic waveguide structure is proposed and numerically analyzed by the finite-difference time-domain (FDTD) method and coupled mode theory (CMT). Triple plasmonically induced transparency (PIT) was achieved when an extra triangle was added into the structure, and the transmission characteristics were … Web13 de abr. de 2024 · The CPMAs were characterized based on combinations of the above-mentioned parameters with components of the metasurface. The antenna parameters derived from numerical simulations were as follows: ɛ r,h,1 = 8, h host,1 = 0.5 mm, and s w,1 = 0.01 mm for the CPMA1; ɛ r,h,2 = 4, h host,2 = 0.5 mm, and s w,2 = 0.01 mm for CPMA2. lateness synonym

Ultrathin and Multicolor Optical Cavities with Embedded Metasurfaces

Metasurfaces-based imaging and applications: from miniaturized optical …

WebNanomembranes are the most widespread building block of life, as they encompass cell and organelle walls. Their synthetic counterparts can be described as freestanding or free-floating structures thinner than 100 nm, down to monatomic/monomolecular thickness and with giant lateral aspect ratios. The structural confinement to quasi-2D sheets causes a … WebPlasmonics is a revolutionary concept in nanophotonics that combines the properties of both photonics and electronics by confining light energy to a nanometer-scale oscillating field of free electrons, known as a surface plasmon. Generation, processing, routing, and amplification of optical signals at the nanoscale hold promise for optical … latensinWeb14 de abr. de 2024 · Practical implementation of CH2Br2 hydrodebromination to CH3Br, an important step in the bromine-mediated functionalization of methane, is currently hindered by the lack of selective and stable catalysts, which typically deactivate over a few hours on stream. Despite ranking as the most active metal for this reaction, palladium has … latensin kapseln

"Web6 de abr. de 2024 · Metasurface-stabilized optical microcavities; Evaluation and characterization of imaging polarimetry through metasurface polarization gratings; … " - Open optical cavities based on metasurfaces

Open optical cavities based on metasurfaces

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Web14 de abr. de 2024 · PDF Dynamic optical metasurfaces with ultrafast temporal response, i.e., spatiotemporal optical metasurfaces, provide attractive solutions and open... Find, read and cite all the research you ... WebOptical cavities are a cornerstone of photonics . They are indispensable in lasers, ... Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, ... Metasurfaces Based on Phase-Change Material as a Reconfigurable Platform for Multifunctional Devices. Niloufar ...

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WebIn principle, electrically gated phase and amplitude control allows for electrical addressability of individual metasurface elements and opens the path to applications in ultrathin optical components for imaging and sensing technologies, such as reconfigurable beam steering devices, dynamic holograms, tunable ultrathin lenses, nanoprojectors, and … Web22 de nov. de 2024 · We generalize the concept of open optical cavity using one or more reflective metasurfaces instead of two curved mirrors. We provide a simple mathematical framework to describe it in the framework of Maxwell's equations and examples of …

WebZhou, Y., Wu, W., Chen, R., Chen, W., Chen, R., & Ma, Y. (2024). Analog Optical Spatial Differentiators Based on Dielectric Metasurfaces. Advanced Optical Materials ... Web21 de nov. de 2024 · We generalize the concept of open optical cavity using one or more reflective metasurfaces instead of two curved mirrors. We provide a simple …

Web10 de jul. de 2024 · Optical cavities are the major components of lasers and other numerous interferometric optical devices, and minimizing the cavity dimensions below … Web22 de jan. de 2024 · Optical components, such as lenses, have traditionally been made in the bulk form by shaping glass or other transparent materials. Recent advances in metasurfaces provide a new basis for recasting optical components into thin, planar elements, having similar or better performance using arrays of sub …

WebBICs in optical cavities and photonic crystal slabs [19,23,25,28], coupled optical waveguides [29–32], and even isolated subwavelength dielectric particles [33]. Here, we …

Web6 de abr. de 2024 · Imine-based POCs feature cage cavities with ample imine/amine functionalities that can capture and confine metal nanoparticles efficiently with ultrafine size and unmatched dispersibility. In this regard, a series of palladium (Pd) nanoparticles of varying sizes (1.0 to 3.0 nm) have been synthesized (236−239) by solution impregnation, … latenna summonWebI am a post doctoral researcher at Karlsruhe Institute of Technology (KIT). My research is focused on light interaction with nanoparticles (scattering, coupling, and optical forces). My PhD thesis dealt with light interaction with a disordered arrangement of nanoparticles on a (meta-)surface. Possible applications will be in holograms, spatial light modulators, (meta … latenna\u0027sWebA metasurface is an artificial nanostructured interface that has subwavelength thickness and that manipulates light by spatially arranged meta-atoms—fundamental building blocks of the metasurface. latenna\\u0027sWebCavity optomechanics is a branch of physics which focuses on the interaction between light and mechanical objects on low-energy scales. It is a cross field of optics, quantum … latens synonymWeb7 de abr. de 2024 · However, most of these metasurfaces are passive type optical devices and, once fabricated, their optical properties cannot be changed. To construct … latensin sanumWeb7 de abr. de 2024 · The advent of metasurfaces, namely, engineered surfaces comprising a spatial arrangement of subwavelength unit structures or meta-atoms, gave rise to a new concept of flat optics owing to their ability to control … latensin d6 kapseln kaufenWeb11 de jun. de 2024 · Optical phased arrays (OPAs) are essential optical elements in applications that require the ability to manipulate the light-wavefront, such as beam focusing and light steering. To miniaturize the optical components, active metasurfaces, especially graphene metasurfaces, are used as competent alternatives. However, the metasurface … latenssi-ikä