Structured illumination lensless digital holographic microscopy (SI-LDHM) DOI Creative Commons
Juanjuan Zheng, Xuhong Guo, Ying Ma

et al.

Frontiers in Physics, Journal Year: 2024, Volume and Issue: 12

Published: Sept. 27, 2024

In this work, we propose a structured-illumination lensless digital holographic microscopy (SI-LDHM). SI-LDHM illuminates sample with 24 structured illuminations (8 orientations × 3 phase shifts) and records the defocused interferogram formed by two copies of object waves along ±1st diffraction orders each SI. The reconstructed under different illumination are respectively propagated to plane +1st order then averaged, thus yielding clean image without artifact twin images. Experimental results demonstrated that thanks multi-oriented SI strategy, in is sevenfold reduced compared conventional DHM, while spatial resolution 1.15 times higher.

Language: Английский

Reconstruction in off-axis digital holography based on hybrid clustering and the fractional Fourier transform DOI
Ying Guan, Ze Cui,

Wenjing Zhou

et al.

Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 186, P. 112622 - 112622

Published: Feb. 23, 2025

Language: Английский

Citations

1
k-space holographic multiplexing for synthetic aperture diffraction tomography DOI Creative Commons
Zhengzhong Huang, Liangcai Cao

APL Photonics, Journal Year: 2024, Volume and Issue: 9(5)

Published: May 1, 2024

Optical diffraction tomography can be performed with low phototoxicity and photobleaching to analyze 3D cells tissues. It is desired develop high throughput powerful data processing capabilities. We propose bandwidth holographic microscopy (HBHM). Based on the analyticity of complex amplitudes, unified multiplexing transfer function established. A scattering field achieved via k-space optical origami two 2D wavefronts from one interferogram. Scanning illumination modulates high-horizontal axial endow synthetic-aperture space-bandwidth product (SBP) fields. The bright-field counterpart SBP a single HBHM 14.6 megapixels, while number pixels only 13.7 megapixels. achieves an eight-fold enhancement under same limit. paves way toward performance throughput, large-scale, non-invasive histopathology, cell biology, industrial inspection.

Language: Английский

Citations

8
Multiplane quantitative phase imaging using a wavelength-multiplexed diffractive optical processor DOI Creative Commons
Che‐Yung Shen, Jingxi Li, Yuhang Li

et al.

Advanced Photonics, Journal Year: 2024, Volume and Issue: 6(05)

Published: July 25, 2024

Quantitative phase imaging (QPI) is a label-free technique that provides optical path length information for transparent specimens, finding utility in biology, materials science, and engineering. Here, we present QPI of three-dimensional (3D) stack phase-only objects using wavelength-multiplexed diffractive processor. Utilizing multiple spatially engineered layers trained through deep learning, this processor can transform the distributions two-dimensional at various axial positions into intensity patterns, each encoded unique wavelength channel. These patterns are projected onto single field view output plane processor, enabling capture quantitative input located different planes an intensity-only image sensor. Based on numerical simulations, show our could simultaneously achieve all-optical across several distinct by scanning illumination wavelength. A proof-of-concept experiment with 3D-fabricated further validates approach, showcasing successful two terahertz spectrum. Diffractive network-based multiplane designs open up new avenues compact on-chip sensing devices.

Language: Английский

Citations

6
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
Imaging micrometer-sized aerosol particles with digital holography DOI
Matthew J. Berg, Justin Jacquot,

Jeremy M. Harris

et al.

Optics Letters, Journal Year: 2024, Volume and Issue: 49(10), P. 2653 - 2653

Published: April 15, 2024

Small particles that are trapped, deposited, or otherwise fixed can be imaged by digital holography with a resolution approaching of optical microscopy. When such in motion as an aerosol, comparable is challenging to achieve. Using simplified bi-telecentric lens system, we demonstrate 1µm free-flowing aerosol at the single-particle level using in-line holography. The imaging demonstrated polystyrene latex microspheres and ragweed pollen aerosol.

Language: Английский

Citations

3
Lensless super-resolved quantitative phase imaging with cm-level lateral translations of two glass plates DOI

Peng Yu,

Yuncong Huang, Yong Li

et al.

Optics Letters, Journal Year: 2024, Volume and Issue: 49(20), P. 5838 - 5838

Published: Sept. 20, 2024

In this Letter, we propose a new, to the best of our knowledge, lensless on-chip holographic microscopy platform, which can acquire sub-pixel-shifting holograms through centimeter (cm)-level lateral translations. An LED light source is used illuminate sample, and two orthogonally tilted step-structure glass plates are inserted into optical path. By merely displacing under cm-level precision, series with sub-pixel displacements be obtained. Combined improved pixel super-resolution (PSR) algorithm, high-quality PSR phase imaging achieved. Tests on high-resolution USAF1951 target demonstrate that system achieve half-width resolution 870 nm by camera size 1.67 µm. Additionally, experiments were conducted phase-type sinusoidal gratings, yeasts, red blood cells, lilium ovary sections, respectively. The results show large field-of-view, low-cost hardware conditions holds promise for its applications in biology medicine.

Language: Английский

Citations

0
Structured illumination lensless digital holographic microscopy (SI-LDHM) DOI Creative Commons
Juanjuan Zheng, Xuhong Guo, Ying Ma

et al.

Frontiers in Physics, Journal Year: 2024, Volume and Issue: 12

Published: Sept. 27, 2024

In this work, we propose a structured-illumination lensless digital holographic microscopy (SI-LDHM). SI-LDHM illuminates sample with 24 structured illuminations (8 orientations × 3 phase shifts) and records the defocused interferogram formed by two copies of object waves along ±1st diffraction orders each SI. The reconstructed under different illumination are respectively propagated to plane +1st order then averaged, thus yielding clean image without artifact twin images. Experimental results demonstrated that thanks multi-oriented SI strategy, in is sevenfold reduced compared conventional DHM, while spatial resolution 1.15 times higher.

Language: Английский

Citations

0