Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 189, P. 113176 - 113176
Published: May 14, 2025
Language: Английский
International Journal of Extreme Manufacturing, Journal Year: 2024, Volume and Issue: 6(4), P. 042002 - 042002
Published: March 20, 2024
Abstract Optical imaging systems have greatly extended human visual capabilities, enabling the observation and understanding of diverse phenomena. Imaging technologies span a broad spectrum wavelengths from x-ray to radio frequencies impact research activities our daily lives. Traditional glass lenses are fabricated through series complex processes, while polymers offer versatility ease production. However, modern applications often require lens assemblies, driving need for miniaturization advanced designs with micro- nanoscale features surpass capabilities traditional fabrication methods. Three-dimensional (3D) printing, or additive manufacturing, presents solution these challenges benefits rapid prototyping, customized geometries, efficient production, particularly suited miniaturized optical devices. Various 3D printing methods demonstrated advantages over counterparts, yet remain in achieving resolutions. Two-photon polymerization lithography (TPL), technique, enables intricate structures beyond diffraction limit via nonlinear process two-photon absorption within liquid resin. It offers unprecedented abilities, e.g. alignment-free fabrication, prototyping almost arbitrary nanostructures. In this review, we emphasize importance criteria performance evaluation devices, discuss material properties relevant TPL, techniques, highlight application TPL imaging. As first panoramic review on topic, it will equip researchers foundational knowledge recent advancements optics, promoting deeper field. By leveraging its high-resolution capability, extensive range, true processing, alongside advances materials, design, envisage disruptive solutions current promising incorporation future applications.
Language: Английский
Citations
31
Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)
Published: Feb. 21, 2024
Optical materials capable of dynamically manipulating electromagnetic waves are an emerging field in memories, optical modulators, and thermal management. Recently, their multispectral design preliminarily attracts much attention, aiming to enhance efficiency integration functionalities. However, the manipulation based on these is challenging due ubiquitous wavelength dependence restricting capacity narrow wavelengths. In this article, we cascade multiple tunable cavities with selective-transparent layers, enabling a universal approach overcoming establishing platform highly integrated functions. Based it, demonstrate (ranging from 400 nm 3 cm), fast response speed (0.9 s), reversible typical phase change material, vanadium dioxide. Our involves tandem VO
Language: Английский
Citations
25
Nature Reviews Electrical Engineering, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 3, 2025
Language: Английский
Citations
5
Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)
Published: Jan. 2, 2025
Abstract Wide field of view and light weight optics are critical for advanced eyewear, with applications in augmented/virtual reality night vision. Conventional refractive lenses often stacked to correct aberrations at a wide view, leading limited performance increased size weight. In particular, simultaneously achieving large aperture collection is desirable but challenging realize compact form-factor. Here, we demonstrate (greater than 60 ∘ ) meta-optic doublet eyepiece an entrance 2.1 cm. At the design wavelength 633 nm, achieves comparable lens-based system. This meta-doublet illustrates potential meta-optics play important role development high-quality monochrome near-eye displays vision systems.
Language: Английский
Citations
3
Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)
Published: Oct. 20, 2023
Dispersion decomposes compound light into its monochromatic components, which is detrimental to broadband imaging but advantageous for spectroscopic applications. Metasurfaces provide a unique path modulate the dispersion by adjusting structural parameters on two-dimensional plane. However, conventional linear phase compensation does not adequately match meta-unit's characteristics with required complex dispersion, hindering at-will engineering over very wide bandwidth particularly. Here, we propose an asymptotic strategy ultra-broadband dispersion-controlled metalenses. extraordinarily high aspect ratio nanostructures have been fabricated arbitrary control in ultra-broad bandwidth, and experimentally demonstrate single-layer achromatic metalenses visible infrared spectrum (400 nm~1000 nm, NA = 0.164). Our proposed scheme provides comprehensive theoretical framework meta-optics, allowing manipulation without restrictions. This development expected significant applications chromatography detection, among others.
Language: Английский
Citations
40
Advanced Photonics, Journal Year: 2023, Volume and Issue: 5(03)
Published: May 23, 2023
Wide field-of-view (FOV) optics are essential components in many optical systems, with applications spanning imaging, display, sensing, and beam steering. Conventional refractive wide FOV often involve multiple stacked lenses, resulting large size weight as well high cost. Metasurface lenses or metalenses promise a viable solution to realizing without complex lens assembly. We review the various architectures of metalenses, elucidate their fundamental operating principles design trade-offs, quantitatively evaluate contrast imaging performances. Emerging enabled by metasurface also discussed.
Language: Английский
Citations
37
Science Advances, Journal Year: 2023, Volume and Issue: 9(51)
Published: Dec. 20, 2023
Flat optics consisting of nanostructures high-refractive index materials produce lenses with thin form factors that tend to operate only at specific wavelengths. Recent attempts achieve achromatic uncover a trade-off between the numerical aperture (NA) and bandwidth, which limits performance. Here, we propose new approach design high-NA, broadband, polarization-insensitive multilayer metalenses (MAMs). We combine topology optimization full-wave simulations inversely MAMs fabricate structures in low-refractive by two-photon polymerization lithography. measuring 20 μm diameter operating visible range 400 800 nm 0.5 0.7 NA were achieved efficiencies up 42%. demonstrate broadband imaging performance fabricated MAM under white light RGB narrowband illuminations. These results highlight potential 3D-printed for realizing multifunctional meta-devices inverse design.
Language: Английский
Citations
35
Photonics Insights, Journal Year: 2023, Volume and Issue: 2(4), P. R09 - R09
Published: Jan. 1, 2023
Diffractive optical elements (DOEs) are intricately designed devices with the purpose of manipulating light fields by precisely modifying their wavefronts. The concept DOEs has its origins dating back to 1948 when D. Gabor first introduced holography. Subsequently, researchers binary (BOEs), including computer-generated holograms (CGHs), as a distinct category within realm DOEs. This was revolution in devices. next major breakthrough field manipulation occurred during early 21st century, marked advent metamaterials and metasurfaces. Metasurfaces particularly appealing due ultra-thin, ultra-compact properties capacity exert precise control over virtually every aspect fields, amplitude, phase, polarization, wavelength/frequency, angular momentum, etc. advancement micro/nano-structures also enabled various applications such information acquisition, transmission, storage, processing, display. In this review, we cover fundamental science, cutting-edge technologies, wide-ranging associated micro/nano-scale for regulating fields. We delve into prevailing challenges pursuit developing viable technology real-world applications. Furthermore, offer insights potential future research trends directions manipulation.
Language: Английский
Citations
34
Journal of the Optical Society of America B, Journal Year: 2023, Volume and Issue: 41(2), P. 341 - 341
Published: Dec. 15, 2023
Metasurfaces (MSs) are being extensively researched owing to their ability modulate the polarization and wavefront of electromagnetic (EM) waves in a flexible manner, which usually offer significant advantages including ultra-thinness, low losses, easy fabrication. However, conventional MSs typically operate well only with single polarization. Here, we propose novel design strategy for terahertz (THz) reflective-mode MS that relies on unit-cell arrangement combining propagation phase geometric phase. Our designed can achieve multiple manipulations reflection mode, not limited circular (CP) transformation, but also enabling linear (LP) conversion. The consists periodic array bilayered metal patterned resonator structures sandwiched by dielectric substrate. metallic is made outer single-split-ring (SSR) C-shaped slot (CSS), inner double-split-ring (DSR), its complementary structure. With this design, capable converting LP wave orthogonal counterpart at lower frequency ( f 1 =0.7THz) after reflection. Additionally, higher 2 =1.4THz), proposed convert right-handed CP (RCP) left-handed (LCP) upon or vice versa. π full coverage be achieved independently simultaneously adjusting opening orientation angles SSR based phase, angle DSR We numerically demonstrate beam deflection, planar focusing, vortex both reflected three representative provide proof concept. These findings reveal great potential multifunctional devices dual-polarization imaging communication systems.
Language: Английский
Citations
30
Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 0(0), P. 240122 - 240122
Published: Jan. 1, 2024
Language: Английский
Citations
16