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Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging

A new hybrid diffractive optical element (HDOE) was designed by randomly multiplexing an axicon and a Fresnel zone lens. The HDOE generates two mutually coherent waves, namely a conical wave and a spherical wave, for every on-axis point object in the object space. The resulting self-interference int...

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Detalles Bibliográficos
Autores principales: Anand, Vijayakumar, Katkus, Tomas, Juodkazis, Saulius
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7231349/
https://www.ncbi.nlm.nih.gov/pubmed/32326337
http://dx.doi.org/10.3390/mi11040437
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author Anand, Vijayakumar
Katkus, Tomas
Juodkazis, Saulius
author_facet Anand, Vijayakumar
Katkus, Tomas
Juodkazis, Saulius
author_sort Anand, Vijayakumar
collection PubMed
description A new hybrid diffractive optical element (HDOE) was designed by randomly multiplexing an axicon and a Fresnel zone lens. The HDOE generates two mutually coherent waves, namely a conical wave and a spherical wave, for every on-axis point object in the object space. The resulting self-interference intensity distribution is recorded as the point spread function. A library of point spread functions are recorded in terms of the different locations and wavelengths of the on-axis point objects in the object space. A complicated object illuminated by a spatially incoherent multi-wavelength source generated an intensity pattern that was the sum of the shifted and scaled point spread intensity distributions corresponding to every spatially incoherent point and wavelength in the complicated object. The four-dimensional image of the object was reconstructed using computer processing of the object intensity distribution and the point spread function library.
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spelling pubmed-72313492020-05-22 Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging Anand, Vijayakumar Katkus, Tomas Juodkazis, Saulius Micromachines (Basel) Communication A new hybrid diffractive optical element (HDOE) was designed by randomly multiplexing an axicon and a Fresnel zone lens. The HDOE generates two mutually coherent waves, namely a conical wave and a spherical wave, for every on-axis point object in the object space. The resulting self-interference intensity distribution is recorded as the point spread function. A library of point spread functions are recorded in terms of the different locations and wavelengths of the on-axis point objects in the object space. A complicated object illuminated by a spatially incoherent multi-wavelength source generated an intensity pattern that was the sum of the shifted and scaled point spread intensity distributions corresponding to every spatially incoherent point and wavelength in the complicated object. The four-dimensional image of the object was reconstructed using computer processing of the object intensity distribution and the point spread function library. MDPI 2020-04-21 /pmc/articles/PMC7231349/ /pubmed/32326337 http://dx.doi.org/10.3390/mi11040437 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Anand, Vijayakumar
Katkus, Tomas
Juodkazis, Saulius
Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging
title Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging
title_full Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging
title_fullStr Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging
title_full_unstemmed Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging
title_short Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging
title_sort randomly multiplexed diffractive lens and axicon for spatial and spectral imaging
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7231349/
https://www.ncbi.nlm.nih.gov/pubmed/32326337
http://dx.doi.org/10.3390/mi11040437
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