Opto-Electronic Advances, Год журнала: 2025, Номер 8(2), С. 250017 - 250017
Опубликована: Янв. 1, 2025
Язык: Английский
Optics & Laser Technology, Год журнала: 2025, Номер 184, С. 112550 - 112550
Опубликована: Янв. 30, 2025
Язык: Английский
Процитировано
1
Opto-Electronic Science, Год журнала: 2024, Номер 3(10), С. 230035 - 230035
Опубликована: Янв. 1, 2024
Supercritical lens (SCL) can break the diffraction limit in far field and has been demonstrated for high-resolution scanning confocal imaging. Its capability sharper focusing needle-like long focal depth should allow lithography at violet or ultraviolet (UV) wavelength, however, this never experimentally demonstrated. As a proof of concept, paper SCLs operating 405 nm (h-line) wavelength with smaller full-width-at-half-maximum spot longer focus than conventional Fresnel zone while maintaining controlled side lobes are designed direct laser writing (DLW) lithography. Aluminum nitride (AlN) high refractive index low loss UV-visible range is used to fabricate nanopillar-based metasurfaces structure metalens. Grating arrays improved pitch resolution fabricated using sub-diffraction-limit capability. The AlN-based metasurface short DLW could extend further UV deep might be great interest both research industry applications.
Язык: Английский
Процитировано
6
Laser & Photonics Review, Год журнала: 2024, Номер 18(11)
Опубликована: Июнь 22, 2024
Abstract 3D nanolithography based on two‐photon polymerization (TPP) allows for the high‐precision fabrication of nearly arbitrary micro/nanostructures, finding extensive applications in areas such as micro‐optics, micro‐mechanics, and biomedicine. However, large size, complexity optical systems, high costs have significantly constrained widespread adoption technology both scientific research industry. In this study, a metasurface is introduced, first time, into resulting construction miniaturized simplified TPP system that achieved efficient multi‐focus parallel processing with uniformity. A microlens array fabricated, showcasing system's application capacity to generate an devices consistency quality. It believed utilization will provide novel operating platform, enabling richer more flexible printing functionalities while maintaining miniaturization low cost.
Язык: Английский
Процитировано
6
Deleted Journal, Год журнала: 2024, Номер 1(1)
Опубликована: Сен. 2, 2024
Optical metasurfaces, planar artificial media capable of controlling light propagation, are transitioning from laboratory curiosity to commercial applications. This shift requires advanced meta-atom and metasurface designs, considering manufacturability enhancing optical performance with post-processing algorithms. Artificial-Intelligence(AI), particularly machine-learning(ML) optimization, offers solutions these demands. perspective systematically reviews AI's potential impact in three critical areas: AI-enabled design-for-manufacturing(DFM), design beyond the classical local phase approximation, AI-empowered computational backend.
Язык: Английский
Процитировано
6
Laser & Photonics Review, Год журнала: 2024, Номер 18(8)
Опубликована: Март 20, 2024
Abstract During the past few years, metasurface polarization optics has experienced remarkable advances, resulting in revolutionary applications imaging, sensing, computing, etc. The realization of complex optical operations requires consideration both individual meta‐atoms as well their intricate couplings. However, conventional design methods face challenges degrees freedom and functionality complexity. Additionally, previous studies are restricted to local single based on explicit mapping relationships while ignoring interactions, an inability meet on‐demand requirements light‐field operations. Here, a global strategy field‐driven polygon evolution achieve inverse large‐scale coupled is proposed. Through two simulations, it can effectively reshape any given target field into optimal structural distribution devices without knowing relationship. Near‐perfect spin‐decoupled beam‐splitting high‐performance focusing, generation arbitrary vector fields Poincaré sphere with maximal diffraction efficiency closely approaching 100%, experimentally demonstrated. This opens up new avenue for rapid large‐scale, multifunctional meta‐devices, which hold significant implications classical quantum information processing domains.
Язык: Английский
Процитировано
5
Optical Materials, Год журнала: 2024, Номер 148, С. 114923 - 114923
Опубликована: Янв. 25, 2024
Язык: Английский
Процитировано
4
Optics Letters, Год журнала: 2024, Номер 49(9), С. 2505 - 2505
Опубликована: Апрель 4, 2024
Diffractive deep neural networks, known for their passivity, high scalability, and efficiency, offer great potential in holographic imaging, target recognition, object classification. However, previous endeavors have been hampered by spatial size alignment. To address these issues, this study introduces a monolayer directional metasurface, aimed at reducing constraints mitigating alignment issues. Utilizing methodology, we use MNIST datasets to train diffractive networks realize digital classification, revealing that the metasurface can achieve excellent image classification results, accuracy of ideal phase mask plates phase-only modulation reach 84.73% 84.85%, respectively. Despite certain loss degrees freedom compared multi-layer plates, single-layer is easier fabricate align, thereby improving utilization efficiency.
Язык: Английский
Процитировано
4
Coatings, Год журнала: 2024, Номер 14(5), С. 535 - 535
Опубликована: Апрель 25, 2024
Coating structures with dynamically adjustable infrared emissivity are crucial in spacecraft components to cope the transient thermal environments of space. For a long time, thermochromic phase change materials have been widely used applications requiring adjustment, and optimizing range has always at forefront research. However, reducing absorption solar radiation significant implications for practical application stability space environments. In this paper, we propose multilayer film structure based on material VO2 combined ZnSe ITO achieve low intelligent radiators Through finite element simulation analysis structure, rate 0.3 an 0.49. According Stefan–Boltzmann’s law, exhibits strong radiative heat dissipation high temperatures weak energy maintain device ensure efficient operation. The radiator operates principles Fabry–Perot resonance. Therefore, demonstrates excellent performance both emissivity, showcasing its tremendous potential field control aerospace.
Язык: Английский
Процитировано
4
Optics & Laser Technology, Год журнала: 2024, Номер 178, С. 111210 - 111210
Опубликована: Июнь 1, 2024
Язык: Английский
Процитировано
4
Laser & Photonics Review, Год журнала: 2023, Номер 18(3)
Опубликована: Дек. 22, 2023
Abstract In the field of optical communications and quantum informatics, polarization orbital angular momentum (OAM) offer a promising way to expand dimension information. However, detecting state topological charge OAM beam on‐chip can be challenging. To address this, an ultracompact metasurface is proposed demonstrated. The composed six polarization‐sensitive metalenses that occupy 60°annular sectors each are capable simultaneous detection. focuses coaxial polarized vortex into locations, foci displacement related value charge. corresponding obtained through reconstructed Stokes parameter using focus light intensities. For proof‐of‐concept, operating at wavelength 1064 nm fabricated, which exhibits exceptional recognition ability. possesses merits ultra‐compact size simultaneously entire identification capability, may encourage development communication systems.
Язык: Английский
Процитировано
9