Abstract Transition‐metal dichalcogenides (TMDCs) monolayers have been considered a perfect platform for realizing exciton‐polariton at room temperature due to their direct bandgap and large binding energy of exciton. It is well established that strong coupling depends on the field enhancement induced by optical nanocavity with high‐quality factor (Q‐factor). In this work, enhanced between exciton TMDC monolayer cavity resonance based symmetry protected magnetic dipole (MD) bound state in...

Strong coupling between resonantly matched surface plasmons of metals and excitons quantum emitters results in the formation new plasmon-exciton hybridized energy states. In strong coupling, plasmonic nanocavities play a significant role due to their ability confine light an ultrasmall volume. Additionally, two-dimensional transition metal dichalcogenides (TMDCs) have exciton binding remain stable at ambient conditions, making them excellent alternative for investigating light-matter...

Abstract Active optical antennas, a novel Schottky photodiode design, have drawn significant attention due to their advantages of near‐field enhancement and hot‐electrons generation for sub‐bandgap photodetection. However, the reported active antenna‐based Si photodetectors shown low photoresponse in limited wavelength range below 1650 nm. This work reports hybrid nanoantenna (NA)‐nanopillar (NP) ultrawide wavelength‐tunable photodetection at room temperature, without using any filters. The...

We present an improved analytical model describing transmittance of a metal-dielectric-metal (MDM) waveguide coupled to arbitrary number stubs. The is built on the well-known analogy between MDM waveguides and microwave transmission lines. This allows one establish equivalent networks for different MDM-waveguide geometries calculate their optical spectra using standard tools transmission-line theory. A substantial advantage our compared earlier works that it precisely incorporates...

The exciton–polaritonic states are generated by the strong interaction between photons and excitons in confined nanocavities. To achieve coupling TMDCs optical modes cavities is quite challenging due to fabrication issues, modal material dispersion cavity, weak confinement of field. Hence, investigation new photonic structures materials necessary develop polariton-based devices. Here, we report observation an anapole mode a slotted silicon nanodisk exciton WSe2 monolayer, leading creation...

Abstract Recently developed halide perovskite semiconductors are viewed as an excellent platform to realize exciton‐polariton at room temperature due their large oscillation strength. Here, the optimized strong coupling between exciton of and quasi‐bound state in continuum (QBIC) with high‐quality factor ( Q ‐factor), supported by all‐perovskite metagrating, including magnetic dipole (MD)‐QBIC toroidal (TD)‐QBIC is demonstrated. By taking advantage extreme electric field confinement enabled...

Abstract The strong light–matter interaction between the exciton of atomically thin transition metal dichalcogenides (TMDCs) and photonic nanocavities leads to formation unique hybrid light-matter quasiparticles known as exciton-polaritons. newly formed mixed state has advantages part such rapid propagation low effective mass highly desirable optical properties TMDC’s exciton, including interparticle interactions nonlinearity spin-valley polarization. These joint make systems an ideal...

Abstract This work presents a study on the optical applications of chemical vapor deposition‐grown Sb 2 Se 3 nanowires in polarized single nanowire photodetectors. High‐quality are obtained with diameters as small ≈15 nm, which is first report for ultrathin nanowires. The fabricated nanowire‐based photodetector low shot noise ≈ 9 × 10 –16 A Hz –1/2 , large signal/noise ratio 1436.55, high responsivity 3.61 W –1 and specific detectivity 2.36 11 Jones, can be attributed to high‐quality...

This study presents a theoretical framework for radiative thermal memristor (RTM), utilizing Tungsten-doped vanadium dioxide (WVO) as the phase-change material (PCM) and silicon carbide (SiC) in far-field regime. The behavior of RTM is depicted through Lissajous curve, illustrating relationship between net flux (Q) periodically modulated temperature difference ΔT(t). It established that variations memristance (M) form closed loop, governed by PCM hysteresis. analysis explores impact...

Two-dimensional (2-D) compact photonic crystal reflectors on suspended InP membranes were studied under normal incidence. We report the first experimental demonstration of 2-D broadband (experimental stopband superior to 200 nm, theoretical 350 nm). They are based coupling free space waves with two slow Bloch modes crystal. Moreover, they present a very strong sensitivity polarization dependence, when modifying their geometry. A (50×50 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A polarization splitter based on gold filled dual-core photonic crystal fiber (DC-PCF) that can work from 1420 nm to 1980 (560 bandwidth) is proposed in this work. The has an extinction ratio lower than −20 dB over a large bandwidth with total length of 254.6 μm. key principle operation the induced change refractive index y-odd mode when it coupled second order plasmonic mode, while other supermodes are weakly affected by mode. broadband and compact may find applications communications...

Exciton-polariton arising from strong light-matter interaction between exciton and optical cavity has attracted considerable attention due to its potential applications in Bose-Einstein condensation, low-threshold lasing, slow light. In recent years, two-dimensional lead halide perovskite emerged as an ideal candidate for realizing polariton at room temperature because it large binding energy quantum yield. Here, we demonstrate that coupling could be enabled with a metasurface supports...

Exciton polaritons in metallic nanocavities and transition-metal dichalcogenide monolayers has led to striking discoveries, ranging from Bose-Einstein condensation slowing light. Although plasmonic offer small mode volumes, the intrinsic losses of remain an open challenge exciton-polariton devices. Consequently, dielectric are used as alternative candidate due their low losses. However, large volumes a central bottleneck nanocavities. Here, we theoretically propose use hybrid...

In this article, a polarizer based on surface plasmon resonance in squeezed rectangular lattice is analyzed through full-vector finite-element method solver. The device allows one state of polarization (e.g., y-polarized mode) to propagate the fiber while other (x-polarized heavily attenuated: modal losses for x- and modes are 1221 dB/cm 1.6 dB/cm, respectively, at wavelength 1310 nm. Given high differential attenuation between two orthogonal modes, could be used as compact with potential...

In recent years, the formation of exciton-polaritons in semiconductor materials has attracted major interest because their exotic optical properties, allowing study many interesting physical phenomena, such as superfluids and Bose-Einstein condensation. Here, we demonstrate a double strong coupling regime perovskite tungsten disulfide $(\mathrm{W}{\mathrm{S}}_{2})$ monolayer using single dual quasibound states continuum (QBIC). Except for supporting exciton resonance,...

On-chip integration of mid-wave infrared (MWIR) absorption spectroscopy gas sensors is a powerful approach to massproducing compact and inexpensive devices systems. Moreover, this opens new horizons for sophisticated applications in environmental monitoring, quality control, Internet-of-Things networks. Nonetheless, further development integrated photonic that can operate at the MWIR band essential. Towards end, we propose an graphene photodetector into silicon-on-sapphire (SOS) slot...

In this article, a deep and near-ultraviolet photodetector (PD), consisting of an alloy zirconium diboride (ZrB2) Chromium (Cr) deposited on top n-doped silicon carbide (SiC) substrate, is examined. The device has responsivity 3.5 A/W at 405 nm with similar value 280 nm. It operates powers below <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$730 \, \mu \text{W}$ </tex-math></inline-formula> saturates...

Photodetectors (PDs) based on 4H silicon carbide (SiC) have garnered significant interest due to their exceptional optoelectronic properties. However, photoresponse is typically restricted the ultraviolet (UV) region, with limited light absorption beyond 380 nm, which constrains utility in visible detection applications. To overcome this limitation, an efficient photodetector was developed using alloy TaC (80%) and Cu (20%) a n-type SiC substrate, enabling effective at 405 nm. The device...

In this work, the results for a fabricated photodetector (PD) based on molybdenum carbide (Mo 2 C) layer integrated with an n‐doped 4H‐silicon (SiC) substrate, designed to operate in near‐ultraviolet, are presented. The Mo C is sputtered onto cleaned SiC followed by deposition of aluminum (Al) electrodes using electron beam evaporation complete PD structure. characterized under 405 nm ultraviolet (UV) light, revealing maximum responsivity 3.6 A W −1 and detectivity 2.11 × 10 8 at bias voltage −2.5 V.

Abstract Radiative heat transfer plays a pivotal role in many applications across various length scales, with its behavior significantly altering as systems change from the far‐field to near‐field regime. In far‐field, radiative is governed by traditional laws such Planck's and Stefan–Boltzmann's laws, which assume that gap between objects involved exchange larger than thermal wavelength (λ th ), limiting energy propagating electromagnetic waves. However, near‐field, where distances are...

A new approach is proposed to realize an optical link for intrachip interconnects. This includes III-V compound-based laser sources and photodetectors, silicon-on-insulator-based strip waveguides. The heterogeneous integration of InP-based microdisk with a silicon waveguide using SiO/sub 2/-SiO/sub 2/ molecular bonding nanofabrication procedures emphasized. technological procedure described first experimental results show that, adequate configuration, 35% light could be coupled from the...

We study experimentally the transmission properties of ${\text{Au-TiO}}_{2}\text{-Au}$ fishnet metamaterials in near-infrared spectral range and analyze change resonances at varying angles incidence different input polarizations. The results show that main peak through is due to excitation hole modes. This high-transmission region significantly influenced by surface plasmon coupling when incident electric field has a component normal metal plates, while little with respect tilt observed...

An optical dipole nano-antenna can be constructed by placing a sub-wavelength dielectric (e.g., air) gap between two metallic regions. For typical applications using light in the infrared region, width is generally range 50 and 100 nm. Owing to close proximity of electrodes, these antennas generate very intense electric fields that used excite nonlinear effects. example, it possible trigger surface Raman scattering on molecules placed vicinity nano-antenna, allowing fabrication biological...

In this article, a new and flexible approach to control the electric field enhancement of bow-tie nano-antennas by integrating them on lateral tapered optical fiber is proposed. The device driven Q-switched laser performance fabricated nano-antenna in quartz slide tested Surface Enhanced Raman Scattering (SERS) experiment. A refractive index sensing experiment also performed sensitivity (240 ± 30) nm/RIU found 1.33-1.35 range.