Published: June 18, 2024
Within the Interreg North-West Europe project OIP4NWE, we have set up an open innovation next-generation pilot line for InP-based photonic integrated circuits (PICs) to improve PIC manufacturing and make packaging more reliable affordable. We present service offering within different components of line, consisting InP in front-end, external interfacing optics back-end. also report on how supported 6 European SMEs with support voucher OIP4NWE line.
Language: Английский
Deleted Journal, Journal Year: 2025, Volume and Issue: 6(0), P. 1 - 1
Published: Jan. 1, 2025
Language: Английский
Citations
1
Photonics, Journal Year: 2025, Volume and Issue: 12(1), P. 31 - 31
Published: Jan. 2, 2025
Metalenses have excellent modulation capabilities in terms of phase, amplitude, and polarization light, significantly reducing the size complexity imaging systems, showing great application prospects. However, like traditional optical meta-atoms, ordinary metalenses suffer from a significant chromatic aberration problem because it is difficult to design phase distribution for different wavelengths on single-layer metalens. To address this, various methods correcting been proposed demonstrated, such as spatial multiplexing, material hybridization, increasing cross-sectional diversity metalens meta-atoms. In this paper, novel method used, which expands parameter space by meta-atoms provide required focusing wavelengths, combined with particle swarm optimization compensation. The multi-level designed achieves constant approximate focal length visible wavelength range λ = 450–650 nm, polarization-independent absolute efficiency about 17%, numerical aperture (NA) 0.31 lens diameter 100 μm. This improves quality.
Language: Английский
Citations
0
Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(5)
Published: Feb. 3, 2025
We demonstrate a 100 mm-diameter, 2.4 μm-thick multilevel diffractive lens (MDL) with 200 mm focal length, optimized for the 400 to 800 nm wavelength range—specifications that are difficult achieve even complex multi-element refractive systems. Created using an inverse-design approach and grayscale lithography, MDL achieves achromatic focusing, confirmed through hyperspectral point-spread function (PSF) characterization. Imaging experiments resolved spatial frequencies up 181 lp/mm demonstrated MDL's capability in capturing high-quality, full-color images of moon, sun, distant terrestrial scenes. Color-enhanced lunar revealed key geological features, while solar imaging identified visible sunspots. Additionally, was integrated form hybrid telescope, significantly reducing weight airborne space-based applications. Simulations experimental results reported here underscore potential large-area flat lenses as lightweight alternatives conventional systems astrophotography other long-range tasks.
Language: Английский
Citations
0
Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 6, 2025
Abstract This study introduces an approach, termed film‐based multi‐photon lithography (MPL), for the efficient fabrication of electromagnetic surface structures. Unlike conventional MPL, which utilizes droplet‐shaped photosensitive volumes 3D structures, this method employs thin films to minimize influence axial voxel dimensions. modification enables rapid printing 2D structures over large areas with dry objective lenses, achieving feature sizes as small 250 nm. The versatility MPL is demonstrated through terahertz metasurfaces featuring metallized split‐ring resonators on glass substrates, well mid‐infrared comprising dielectric pillars silicon‐on‐insulator substrates. These are successfully produced spanning cm 2 and mm using a hybrid organic–inorganic photoresist within maximum processing time h. Particularly organic‐inorganic photoresists, additional post‐processing via calcination shows significant potential producing purely inorganic periodic reduced sizes. Moreover, high‐resolution 2.5D challenging achieve lithographic methods. Experimental results analyzed profilometry, scanning electron microscopy, Fourier transform infrared spectroscopy, energy‐ dispersive X‐ray while simulations confirmed responses metasurfaces.
Language: Английский
Citations
0
Symmetry, Journal Year: 2024, Volume and Issue: 16(10), P. 1377 - 1377
Published: Oct. 16, 2024
Multilevel diffractive lenses (MDLs) has undergone considerable advancements, marked by their exceptional efficiency and diverse focusing capabilities, resulting in widespread use optical systems. In recent times, MDLs have consistently been juxtaposed with metalenses, which experienced swift progress over the last decade. Concurrently, continued to evolve, propelled distinct advantages, such as cost-effective production adaptability for mass manufacturing. This article explores evolution foundational concepts of MDLs, highlighting advantages circular symmetry enhancing simulation optimization efficiency. Furthermore, we present several innovative fabrication methods that capitalize on latest advancements 3D printing technology. We also show practical applications potential future developments MDLs.
Language: Английский
Citations
2
Optics Express, Journal Year: 2024, Volume and Issue: 32(13), P. 22563 - 22563
Published: May 29, 2024
This feature issue of Optics Express was created in conjunction with a topical meeting that took place during the 2023 Optica Imaging Congress and includes 17 state-of-the art articles. introduction provides summary these articles cover various aspects metasurfaces from fundamental mechanisms, design methods, novel materials processes to applications.
Language: Английский
Citations
1
Published: June 18, 2024
We present the development and evaluation of metalenses fabricated with two-photon polymerization-based 3D nanoprinting technology. In our design, we investigated a periodic lattice multilevel nanopillars, based on natural ellipsoidal shape voxel in fabrication process. By creating nanopillars various heights, can tune effective refractive index metasurface order to modulate phase profile an incoming light beam. therefore push fast flexible polymerization technique its limits terms dimensions view high performance metalenses. To demonstrate optical these metalenses, also created their diffractive counterparts same technology allow for direct comparison. Moreover, show that be tip standard telecom single-mode fibers collimation output
Language: Английский
Citations
0
Published: June 18, 2024
Within the Interreg North-West Europe project OIP4NWE, we have set up an open innovation next-generation pilot line for InP-based photonic integrated circuits (PICs) to improve PIC manufacturing and make packaging more reliable affordable. We present service offering within different components of line, consisting InP in front-end, external interfacing optics back-end. also report on how supported 6 European SMEs with support voucher OIP4NWE line.
Language: Английский
Citations
0