Integratable high-efficiency achromatic metalens across the entire low-loss bands of optical fiber from 1260 to 1625 nm DOI

Dongping Cheng,

Xiujuan Zou, Peng Wan

et al.

Applied Optics, Journal Year: 2024, Volume and Issue: 63(31), P. 8288 - 8288

Published: Oct. 21, 2024

A challenge in optic fiber is to control dispersion over the entire low-loss bands covering O + E S C L with integratable ultracompact devices, which inevitably limits range of fiber-based applications. Metalens supplies a dynamic platform for correcting chromatic aberration optical devices flexible, integratable, and way. Hence, we propose broadband achromatic metalens integrated on end face single-mode wavelength region. Utilizing particle swarm optimization algorithm, have substantially mitigated phase-compensated matching error scheme. It demonstrates that achievable focuses band high mean focusing efficiency 84.55%. Furthermore, this device exhibits remarkable capability break through diffraction limit output field. This work provides theoretical basis fiber-integrated bands, has promising applications imaging, sensing, communication.

Language: Английский

High‐Fidelity Computational Microscopy via Feature‐Domain Phase Retrieval DOI Creative Commons
Shuhe Zhang, An Pan, Hong‐Bo Sun

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 22, 2025

Abstract Computational microscopy enhances the space‐bandwidth product and corrects aberrations for high‐fidelity imaging by reconstructing complex optical wavefronts. Phase retrieval, a core technique in computational microscopy, faces challenges maintaining consistency between physical real‐world formation, as models idealize real phenomena. The discrepancy ideal actual formation limits application of especially non‐ideal situations. Here, feature‐domain achieving is introduced. Feature‐domain tells that certain features, such edges, textures, or patterns an image, remain invariant different image transformations, degradations, representations. Leveraging consistency, Feature‐Domain Retrieval (FD‐PR) proposed, framework applicable to various microscopy. Instead working directly with images' pixel values, FD‐PR uses features guide reconstruction wavefronts takes advantage invariance components images against mismatches models. Experimental studies, across diverse phase retrieval microscopic tasks, including coded/Fourier ptychography, inline holography, aberration correction, demonstrate improves resolution factor 1.5 reduces noise levels 2. proposed can immediately benefit wide range microscopies, X‐ray diffraction tomography, wavefront shaping.

Language: Английский

Citations

0
Single-Shot Imaging DOI
Xuyang Zhou, Ziyang Li, Yutong Li

et al.

Published: Jan. 1, 2025

Citations

0
Lensless imaging with a programmable Fresnel zone aperture DOI Creative Commons
Xu Zhang, Bowen Wang, Sheng Li

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(12)

Published: March 21, 2025

Optical imaging has long been dominated by traditional lens-based systems that, despite their success, are inherently limited size, weight, and cost. Lensless seeks to overcome these limitations replacing lenses with thinner, lighter, cheaper optical modulators reconstructing images computationally, while facing trade-offs in image quality, artifacts, flexibility inherent static modulation. Here, we propose a lensless method programmable Fresnel zone aperture (FZA), termed LIP. With commercial liquid crystal display, designed an integrated LIP module demonstrated its capability of high-quality artifact-free reconstruction through dynamic modulation offset-FZA parallel merging. Compared static-modulation approaches, achieves 2.5× resolution enhancement 3 decibels improvement signal-to-noise ratio “static mode” maintaining interaction frame rate 15 frames per second “dynamic mode.” Experimental results demonstrate LIP’s potential as miniaturized platform for versatile advanced tasks like virtual reality human-computer interaction.

Language: Английский

Citations

0
Multichannel Fusion Structured Light 3D Imaging Based on Metasurfaces DOI Open Access
Peng Liu, Fan Xu, Jiaru Chu

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Abstract Structured light imaging, an advanced technology in computational 3D illuminates the target scene with structured and then decodes modulated information to reconstruct object. The current imaging systems are typically composed of a multitude bulky diffractive optical elements lenses, which impede their prospective integration miniaturization. Furthermore, they constrained provide narrow field view limited encoding information. Here, multichannel fusion metasurface‐based method is proposed, can project two sets phase‐shifted fringes via polarization multiplexed metasurface. This allows for analysis more intricate scene, including speckle patterns fringe phases, by switching orthogonal orientation incident linearly polarized light. To fully exploit information, speckle‐and‐phase stereo reconstruction framework developed, enables high‐resolution high‐precision systematic solution paves way its practical applications.

Language: Английский

Citations

0
Phase reconstruction via metasurface-integrated quantum analog operation DOI Creative Commons
Qiuying Li, Liang Meng, Shuoqing Liu

et al.

Opto-Electronic Advances, Journal Year: 2025, Volume and Issue: 0(0), P. 240239 - 240239

Published: Jan. 1, 2025

Language: Английский

Citations

0
Quantitative Phase Imaging with a Meta-Based Interferometric System DOI Creative Commons
Cheng Hung Chu,

Chen-Ming Tsai,

Takeshi Yamaguchi

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Optical phase imaging has become a pivotal tool in biomedical research, enabling label-free visualization of transparent specimens. Traditional optical techniques, such as Zernike contrast and differential interference microscopy, fall short providing quantitative information. Digital holographic microscopy (DHM) addresses this limitation by offering precise measurements; however, off-axis configurations, particularly Mach-Zehnder Michelson-based setups, are often hindered environmental susceptibility bulky components due to their separate reference object beam paths. In work, we have developed meta-based interferometric system using common-path DHM configuration. A meta-biprism, featuring two opposite gradient phases created GaN nanopillars selected for low loss durability, serves compact efficient splitter. Our effectively captures the complex wavefronts samples, retrieval information, which demonstrate standard resolution targets human lung cell lines. Additionally, our exhibits enhanced temporal stability compared conventional reducing fluctuations over extended measurement periods. These results not only underline potential metasurfaces advancing capabilities but also promise significant advancements diagnostics.

Language: Английский

Citations

0
Multifunctional Meta-optic Azimuthal Shear Interferometer DOI Creative Commons

Linzhi Yu,

Sergey Shevtsov, Haobijam Johnson Singh

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Azimuthal shear interferometry is a versatile tool for analyzing wavefront asymmetries. However, conventional systems are bulky, alignment-sensitive, and prone to nonuniform shear. We present broadband, compact, robust meta-optics-based azimuthal interferometer in common-path configuration, reducing the system size millimeter scale. Unlike designs, meta-optic utilizes localized modulation capabilities of meta-optics achieve uniform displacement independent radial position, significantly enhancing accuracy stability. Our approach eliminates need bulky optical components precise multipath alignment, making it more resilient environmental disturbances. Its multifunctionality demonstrated through applications all-optical edge detection, differential interference contrast microscopy, aberrated sensing. These results underscore its potential real-time analog image processing, advanced imaging, testing.

Language: Английский

Citations

0
Monolithic silicon carbide metasurfaces for engineering arbitrary 3D perfect vector vortex beams DOI Creative Commons

M.-C. Liu,

Peicheng Lin, Pengcheng Huo

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 29, 2025

Language: Английский

Citations

0
High-speed single-shot multiplane phase retrieval using quadratic distorted gratings for coherent diffraction imaging DOI
Chao Yang, Cheng Xu,

Jun Lan

et al.

Optics and Lasers in Engineering, Journal Year: 2025, Volume and Issue: 193, P. 109057 - 109057

Published: May 5, 2025

Language: Английский

Citations

0
Computing Metasurface Enabled Quantum Phase Distillation DOI
Qiang Yang, Jiawei Liu, Yichang Shou

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: May 6, 2025

Quantum image distillation aims to extract the signal from a mixture of and noise images that are indistinguishable in terms spectrum polarization, process is unachievable with classical methods. However, contrast amplitude image, phase challenging via direct spatial or temporal correlation photon pairs. Incorporating polarization entanglement pairs, it demonstrated here can be quickly distilled by using an integrated computing metasurface solve Poisson equation. The proposed technique remains robust even levels two orders higher than signal, potential applications quantum communication cryptography. Based on present scheme, also enables measurement wave function achievement noninterferometric quantum-enhanced quantitative imaging. Our work involving integrated-metasurface analogue paves way for advancing efficient rapid information processing.

Language: Английский

Citations

0