Results 91 to 100 of about 35,274,744 (211)

Zooming algorithms for Digital Holography

open access: yesJournal of Physics: Conference Series, 2010
Digital Holography is an imaging modality made up of two parts: (i) Recording an interference pattern on a CCD, where an object wave field and a known reference wave are coincident and extracting the complex object wave field from this interference pattern and (ii) Replaying or reconstructing the hologram on a computer by simulating the propagation of ...
Hennelly, Bryan M.   +3 more
openaire   +2 more sources

Vectorial Diffractive Neural Metasurfaces for Multiplexed Synthesis of Optical Skyrmions

open access: yesNanophotonics, Volume 15, Issue 17, 11 September 2026.
A three‐layer Jones‐matrix‐based vectorial diffractive neural network enables compact, passive, and multiplexed synthesis of optical skyrmions and bimerons. By mapping distinct Gaussian‐beam input channels to coaxial orbital‐angular‐momentum and polarization states, the device generates up to 16 topological vector textures with high mode purity, robust
Tianqu Chen   +8 more
wiley   +1 more source

Extending the Depth of Field beyond Geometrical Imaging Limitations Using Phase Noise as a Focus Measure in Multiwavelength Digital Holography

open access: yesApplied Sciences, 2018
Digital holography is a well-established technology for optical quality control in industrial applications. Two common challenges in digital holographic measurement tasks are the ambiguity at phase steps and the limited depth of focus.
Tobias Seyler   +5 more
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

open access: yesAdvanced Functional Materials, Volume 36, Issue 74, 14 September 2026.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou   +6 more
wiley   +1 more source

Backscatter digital holography of microparticles

open access: yesOptics Express, 2013
This work investigates a method for digital holographic imaging of microparticles. Traditional digital holographic techniques use a particle's forward scattered light to form the hologram, whereas here we use the backscattered light. Images of a particle are then computationally reconstructed from the backscatter hologram, and several examples of such ...
Nava R, Subedi   +2 more
openaire   +2 more sources

Wavefront division digital holography

open access: yesAIP Advances, 2018
Digital holography (DH), mostly Mach-Zehnder configuration based, belongs to non-common path amplitude splitting interference imaging whose stability and fringe contrast are environmental sensitive.
Wenhui Zhang   +6 more
doaj   +1 more source

Light‐Imprinted Chirality in Nanomaterials: From Principles to Applications

open access: yesAdvanced Science, Volume 13, Issue 49, 3 September 2026.
Light‐induced chirality represents a transformative paradigm for fabricating chiral nanostructures. This review provides a comprehensive framework encompassing light‐based strategies for imprinting and tuning chirality in nanomaterials, which guides researchers in harnessing light to create next‐generation functional materials.
Xinru Jin   +3 more
wiley   +1 more source

Multiwavelength digital holography with spatial phase shifting on moving objects

open access: yes, 2022
Paper DM3I.6, 3 S.It was not possible so far to characterize moving objects using interferometric techniques. We present an implementation where the 3D profiles of objects moving at velocities up to 100 mm/s are obtained by digital ...
Buse, Karsten   +6 more
core   +1 more source

Digital holography - an innovative technology for analysis of living cells

open access: yesBioingeniøren, 2010
Background: Digital holography is a novel technique which has been used for about five years to study living cells. The technique is an innovative, non-destructive method with possibilities to study living cells over time.
Zahra El-Schish   +3 more
doaj  

Holografia digital complexa utilizando um interferômetro shearing [PDF]

open access: yes, 2003
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.A evolução das câmeras CCD e sistemas de processamento de imagens viabilizaram o desenvolvimento da holografia digital.
Fantin, Analucia Vieira
core  

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