Results 31 to 40 of about 29,331 (339)

Linearly modulated multi-focal diffractive lens for multi-sheet excitation of flow driven samples in a light-sheet fluorescence microscope

open access: yesJournal of the European Optical Society-Rapid Publications, 2023
Light sheet fluorescence microscope with single light sheet illumination enables rapid 3D imaging of living cells. In this paper we show the design, fabrication and characterization of a diffractive optical element producing several light sheets along a ...
Hofmann Meike   +5 more
doaj   +1 more source

Classification and reconstruction of spatially overlapping phase images using diffractive optical networks

open access: yesScientific Reports, 2022
Diffractive optical networks unify wave optics and deep learning to all-optically compute a given machine learning or computational imaging task as the light propagates from the input to the output plane. Here, we report the design of diffractive optical
Deniz Mengu   +3 more
doaj   +1 more source

Simulation of a method to directly image exoplanets around multiple stars systems [PDF]

open access: yes, 2014
Direct imaging of extra-solar planets has now become a reality, especially with the deployment and commissioning of the first generation of specialized ground-based instruments such as the GPI, SPHERE, P1640 and SCExAO. These systems will allow detection
Belikov, Ruslan   +2 more
core   +3 more sources

Laser Application and Sparse Imaging Analysis of Diffractive Optical System

open access: yesLeida xuebao, 2020
In recent years, the diffractive optical systems have developed rapidly. Diffractive devices such as binary optical device and membrane-based lens are equivalent to fixed phase shifters of microwave antennas.
LI Daojing   +6 more
doaj   +1 more source

All-optical image classification through unknown random diffusers using a single-pixel diffractive network

open access: yesLight: Science & Applications, 2023
Classification of an object behind a random and unknown scattering medium sets a challenging task for computational imaging and machine vision fields.
Bijie Bai   +6 more
doaj   +1 more source

Diffractive optics approach towards subwavelength pixels

open access: yes, 2018
Pixel size in cameras and other refractive imaging devices is typically limited by the free-space diffraction. However, a vast majority of semiconductor-based detectors are based on materials with substantially high refractive index.
Fan, Bo   +2 more
core   +1 more source

Optical lithography [PDF]

open access: yes, 2019
Optical lithography is a photon-based technique comprised of projecting an image into a photosensitive emulsion (photoresist) coated onto a substrate such as a silicon wafer. It is the most widely used lithography process in the high volume manufacturing
Antonsen   +39 more
core   +2 more sources

Compressive Spectral Imaging with Diffractive Lenses

open access: yes, 2019
Compressive spectral imaging enables to reconstruct the entire three-dimensional (3D) spectral cube from a few multiplexed images. Here, we develop a novel compressive spectral imaging technique using diffractive lenses.
Kar, Oğuzhan Fatih, Oktem, Figen S.
core   +1 more source

Optimized Iterative Algorithm to Generate Computer-Generated Holograms Based on the Intermediate Angular-Spectrum Method

open access: yesIEEE Photonics Journal, 2022
The intermediate angular-spectrum method is an efficient way to calculate computer-generated holograms without zero-padding and cropping operation. In this paper, we present an optimized iteration algorithm to improve the reconstruction quality in the ...
Dapu Pi, Juan Liu, Yongtian Wang
doaj   +1 more source

X-ray interferometry with transmissive beam combiners for ultra-high angular resolution astronomy

open access: yes, 2009
Interferometry provides one of the possible routes to ultra-high angular resolution for X-ray and gamma-ray astronomy. Sub-micro-arc-second angular resolution, necessary to achieve objectives such as imaging the regions around the event horizon of a ...
Krizmanic, J. F., Skinner, G. K.
core   +1 more source

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