Published: Jan. 1, 2024
Language: Английский
Nanophotonics, Journal Year: 2025, Volume and Issue: 14(3), P. 407 - 416
Published: Jan. 31, 2025
Chirality of exciton-polaritons can be tuned by the chirality photons, excitons, and their coupling strength. In this work, we propose a general analytical model based on coupled harmonic oscillators to describe exciton-polaritons. Our predicts degree circular polarization (DCP) exciton-polaritons, which is determined DCPs weight fractions constituent excitons photons. At anticrossing point, DCP equally contributed from both constituents. Away relaxes toward dominant constituent, with relaxation rate decreasing as strength increases. We validate our through simulations strongly topological edge states showing good agreement predictions. provides valuable tool for designing strong systems offers framework inverse design tailored chirality.
Language: Английский
Citations
1
Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(7)
Published: Feb. 3, 2025
Language: Английский
Citations
1
Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(3)
Published: Jan. 8, 2025
Language: Английский
Citations
0
Optics Express, Journal Year: 2025, Volume and Issue: 33(2), P. 2995 - 2995
Published: Jan. 9, 2025
In this paper, an optically transparent dual-band microwave chiral metamaterial based on indium tin oxide (ITO) strips is proposed. The rotation angle and length of the three ITO structural layer can be varied to generate two independent frequency bands in circular dichroism (CD) spectrum. maximum CD value 0.72, optical transmittance reaches 64%. experimental simulation results are largely agreement. Moreover, a designed 2D image encoder proposed as potential application. device has considerable for application fields signal transmission, information coding, homeland security.
Language: Английский
Citations
0
Nanophotonics, Journal Year: 2025, Volume and Issue: 14(2), P. 263 - 270
Published: Jan. 16, 2025
Monolayer transition metals dichalcogenides (TMDs) have been coupled to bound-state in the continuum (BIC) hosted dielectric structures attain high second harmonic generation (SHG). However, transvers electric modes are strongly localized waveguides result fairly weak exciton-photon coupling monolayer TMD placed on surface. To achieve SHG few-layers TMDs based BIC-inspired structure is a challenge. Here, we report BIC metasurface with quality factor (Q-factor), tunability, and modes-upholding different environments. The sustains at thickness of meta-atoms, which highly desired for maintaining accuracy fabrications. Next, calculate efficiency from around wavelengths. conversion this work 1.47 × 10-4 6 mW incident power. Moreover, our design thin can be used various linear non-linear applications optics. This study will provide new route next post-silicon metasurfaces.
Language: Английский
Citations
0
Optics Letters, Journal Year: 2025, Volume and Issue: 50(5), P. 1649 - 1649
Published: Feb. 5, 2025
Structurally modulated intrinsic chirality is a structural transformation phenomenon in photoresponsive molecules that commonly utilized biosensing and chemical analysis. In this study, we proposed an approach to achieve giant quasi-bound state the continuum (Q-BICs)-slanted tetramer metasurface, where high Q factors circular dichroism (CD) coexist. Empowered by simultaneous resonance between toroidal dipole (TD) electric quadrupole (EQ) modes, can be effectively tuned via variations slant angles of metasurface. Our work not only addresses lack strong chiral materials nature but also opens up new possibilities chiroptical sensing, analysis, biotechnology.
Language: Английский
Citations
0
Physica Scripta, Journal Year: 2025, Volume and Issue: 100(4), P. 045504 - 045504
Published: Feb. 21, 2025
Abstract Bound states in the continuum (BIC) present a novel avenue for advancing high-quality factor metasurfaces, promising high-performance lasers, sensors, and nonlinear optical devices at nanoscale. Currently, sensors designed based on BIC have achieved good sensing performance. However, functionality of current metasurface is relatively singular, rendering them less chance complex scenarios. Specifically, taking bio-enzyme sensor as an example, since different bio-enzymes optimal reaction temperatures, it mostly inescapable to design multiple detection. In this paper, we developed multifunctional that can adapt temperatures bio-enzymes, meeting requirements The proposed consists two elliptical cylinders, which excite high-Q quasi-BIC resonance by changing their rotation angles. By introducing VO 2 film, external ambient temperature effectively manipulate transmission modulation depth quasi-BIC. Simulation results show maximum relative reach 296%. When combined with serves refractive index sensitivity high 370 nm RIU −1 30 °C 80 °C. Our work provides insights highly integrated tunable future.
Language: Английский
Citations
0
Physica B Condensed Matter, Journal Year: 2025, Volume and Issue: unknown, P. 417141 - 417141
Published: March 1, 2025
Language: Английский
Citations
0
ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 12, 2025
Language: Английский
Citations
0
Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(15)
Published: April 21, 2025
Language: Английский
Citations
0