Results 31 to 40 of about 16,139 (251)

Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy

open access: yesPhotonics, 2022
In the image plane configurations frequently used in digital holographic microscopy (DHM) systems, interference patterns are captured by a photo-sensitive array detector located at the image plane of an input object.
Nazif Demoli   +4 more
doaj   +1 more source

Image Contrast Improvement in Interference-Dark-Field Digital Holographic Microscopy

open access: yesPhotonics, 2021
Conventional dark-field digital holographic microscopy (DHM) techniques require the use of specialized optics, and, thus, obtaining dark-field images with high contrast has a high cost. Herein, we propose a DHM system that uses an interference-dark-field
Chi-Ching Chang   +4 more
doaj   +1 more source

Digital Holography at Shot Noise Level [PDF]

open access: yes, 2010
By a proper arrangement of a digital holography setup, that combines off-axis geometry with phase-shifting recording conditions, it is possible to reach the theoretical shot noise limit, in real-time experiments.We studied this limit, and we show that it
Atlan, Michael   +3 more
core   +5 more sources

Physics-driven learning for digital holographic microscopy [PDF]

open access: yesEPJ Web of Conferences
Deep neural networks based on physics-driven learning make it possible to train neural networks with a reduced data set and also have the potential to transfer part of the numerical computations to optical processing.
Kieber Rémi   +2 more
doaj   +1 more source

Holographic microscopy reconstruction in both object and image half spaces with undistorted 3D grid [PDF]

open access: yes, 2015
We propose an holographic microscopy reconstruction method, which propagates the hologram, in the object half space, in the vicinity of the object. The calibration yields reconstructions with an undistorted reconstruction grid i.e.
Alexandre, Danier   +3 more
core   +2 more sources

On-chip differential interference contrast microscopy using lensless digital holography. [PDF]

open access: yes, 2010
We introduce the use of a birefringent crystal with lensless digital holography to create an on-chip differential interference contrast (DIC) microscope.
Isikman, Serhan O   +3 more
core   +1 more source

Study on Quantitative Phase Imaging by Dual-Wavelength Digital Holography Microscopy

open access: yesInternational Journal of Optics, 2018
A dual-wavelength digital holographic microscopy with premagnification is proposed to obtain the object surface measurements over the large gradient. The quantitative phase images of specimens are captured in high precision by the processing of filtering
Lin Hu   +5 more
doaj   +1 more source

High numerical aperture holographic microscopy reconstruction with extended z range [PDF]

open access: yes, 2015
An holographic microscopy reconstruction method compatible with high numerical aperture microscope objective (MO) up to NA=1.4 is proposed. After off axis and reference field curvature corrections, and after selection of the +1 grating order holographic ...
Donnarumma, Dario   +3 more
core   +4 more sources

Parallel phase-shifting digital holographic microscopy [PDF]

open access: yesBiomedical Optics Express, 2010
We propose parallel phase-shifting digital holographic microscopy (PPSDHM) which has the ability of three-dimensional (3-D) motion measurement using space-division multiplexing technique. By the PPSDHM, instantaneous information of both the 3-D structure and the phase distributions of specimens can be simultaneously acquired with a single-shot exposure.
Takashi Kakue   +9 more
openaire   +3 more sources

Lensfree on-chip microscopy over a wide field-of-view using pixel super-resolution. [PDF]

open access: yes, 2010
We demonstrate lensfree holographic microscopy on a chip to achieve approximately 0.6 microm spatial resolution corresponding to a numerical aperture of approximately 0.5 over a large field-of-view of approximately 24 mm2.
Bishara, Waheb   +3 more
core   +1 more source

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