Applied Physics B, Journal Year: 2024, Volume and Issue: 130(12)
Published: Nov. 27, 2024
Language: Английский
Nano Letters, Journal Year: 2024, Volume and Issue: 24(29), P. 9027 - 9033
Published: July 10, 2024
We study, both theoretically and experimentally, strong interaction between a quasi-bound state in the continuum (QBIC) supported by resonant metasurface with an epsilon-near-zero (ENZ) guided mode excited ultrathin ITO layer. observe quantify coupling regime of QBIC-ENZ hybrid manifested through splitting over 200 meV. also measure experimentally nonlinear response enhanced near ENZ frequency effective refractive index up to ∼4 × 10
Language: Английский
Citations
9
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 18, 2025
Abstract Metasurfaces have garnered significant attention for their ability to manipulate light waves with multifunctional capabilities. Integrating independent wavefront controls within a single metasurface is essential meet the growing demand high‐capacity, flat photonic devices. In this work, versatile non‐interleaved plasmonic platform utilizing quarter‐wave plate meta‐atoms and simultaneous phase modulation of both co‐ cross‐polarized circularly polarized subwavelength pixels, achieved by merging resonance Pancharatnam‐Berry phases presented. We propose experimentally validate three proof‐of‐concept designs operating in near‐infrared range: beam deflector distinct reflection angles, focusing metalens focal lengths, vortex generator tunable topological charges. This paves way customizable, multi‐channel functionalities, advancing development integrated devices enhanced versatility.
Language: Английский
Citations
1
PhotoniX, Journal Year: 2024, Volume and Issue: 5(1)
Published: Sept. 30, 2024
Abstract The field of high-bandwidth holography has been extensively studied over the past decade. Orbital angular momentum (OAM) holography, which utilizes vortex beams with theoretically unbounded OAM modes as information carriers, showcases large capacitance hologram storage. However, limited to a single wavelength, restricting its potential for full-color and displays. In this study, we propose wavelength multiplexed that multiple dimensions light—wavelength OAM—to provide multi-color platform expands capacity holographic storage devices. proposed wavelength-OAM is physically realized by metasurface, state-of-the-art optical element consisting an array artificially engineered nanostructures. Hydrogenated silicon meta-atoms, constituents are possess selectivity tailoring dispersion polarization conversion. These meta-atoms used encode calculated OAM-preserved phase maps based on our design. sampling grid map rotated 45°, effectively suppress higher-order diffraction, providing great strategy achieving field-of-view (FOV) holography. We successfully demonstrate six images selectively reconstructed under illumination light specific wavelengths ( λ = 450, 635 nm) topological charges l -2, 0, 2), without high-order diffraction. Our work suggests ultrathin meta-holograms can potentially realize ultrahigh-bandwidth video displays FOV.
Language: Английский
Citations
8
Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128174 - 128174
Published: May 28, 2024
Language: Английский
Citations
5
Advanced Science, Journal Year: 2024, Volume and Issue: unknown
Published: July 8, 2024
Nonlinear nanophotonic devices have shown great potential for on-chip information processing, quantum source, 3D microfabrication, greatly promoting the developments of integrated optics, science, nanoscience and technologies, etc. To promote applications nonlinear nanodevices, improving efficiency, expanding spectra region response reducing device thickness are three key issues. Herein, this study focuses on effect third-harmonic generation (THG), present a thin Si meta-sructure to improve THG efficiency in ultraviolet (UV) region. The measured is up 10
Language: Английский
Citations
5
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 16, 2024
Abstract Vectorial metasurface holography, allowing for independent control over the amplitude, phase, and polarization distribution of holographic images enabled by metasurfaces, plays a crucial role in realm optical display, optical, quantum communications. However, previous research on vectorial holography has typically been restricted to single degree freedom input channel output, thereby demonstrating very limited modulation capacity. This work presents novel method achieve multi‐channel harnessing spin‐orbit‐locking vortex beams. In each channel, field is encoded with pair total angular momentums (TAMs) featuring two orthogonal spin (SAMs) independently locked arbitrary orbital (OAMs). The methodology relies modified Gerchberg‐Saxton algorithm, enabling encoding various TAM channels within phase profile. Consequently, pure geometry‐phase non‐interleaved approach can be used support such achieving high selectivity both SAM OAM, offering precise routing manipulation complex light channels. paradigm shift promising avenues high‐density information processing future photonic device design.
Language: Английский
Citations
5
ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 5, 2025
Language: Английский
Citations
0
Nanophotonics, Journal Year: 2025, Volume and Issue: 14(3), P. 417 - 427
Published: Feb. 2, 2025
Abstract The perfect vector vortex beams (PVVBs) have played an important role in various fields due to their advantages of unique features, flexible polarization distribution and multiple degrees freedom (DoFs). simultaneous precise control over DoFs, such as the distribution, beam shape position which greatly influence characteristics PVVBs, holds paramount importance. However, it is still difficult manipulate DoFs a multiplexing way precision only reaches half-integer level, notably hindering further application development PVVBs. Here, approach that integrates holographic technique with geometric phase metasurfaces, experimentally demonstrates PVVBs three i.e., enabling independent manipulation non-uniform distributions, shapes spatial positions. Furthermore, non-integer order generated can be arbitrary numbers high resolution 0.1, largely improving precision. With precision, we provide abundant processing dimensions for information science technologies, exhibiting broad potentials encryption, high-speed optical communication, particle manipulation.
Language: Английский
Citations
0
Nano Letters, Journal Year: 2025, Volume and Issue: 25(9), P. 3391 - 3397
Published: Feb. 18, 2025
Recent advancements in the study of light-matter interactions between optical cavities and two-dimensional materials have underscored significance strong coupling phenomena, facilitating innovative developments devices quantum information processing. In this study, we explored interaction Bloch-surface plasmon polaritons from a square Ag nanohole array A exciton monolayer WS2, demonstrating significant Rabi splitting 74 meV via angle-resolved transient absorption spectroscopy. By analyzing damping process upper lower branches, observe that branch decays significantly faster than branch. These findings not only enhance our understanding exciton-polariton but also point to potential applications Bose-Einstein condensation, nanophotonics, information.
Language: Английский
Citations
0
Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 186, P. 112606 - 112606
Published: Feb. 27, 2025
Language: Английский
Citations
0