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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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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. |
format | Online Article Text |
id | pubmed-7231349 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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