Full-color, large area, transmissive holograms enabled by multi-level diffractive optics

Full-color, large area, transmissive holograms enabled by multi-level diffractive optics

Abstract We show that multi-level diffractive microstructures can enable broadband, on-axis transmissive holograms that can project complex full-color images, which are invariant to viewing angle. Compared to alternatives like metaholograms, diffractive holograms utilize much larger minimum features...

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Autores principales: Nabil Mohammad, Monjurul Meem, Xiaowen Wan, Rajesh Menon
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
Medicine
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Science
Q
Acceso en línea:https://doaj.org/article/c4c8b9f934c94e788ffb15e955b72c89
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spelling oai:doaj.org-article:c4c8b9f934c94e788ffb15e955b72c892021-12-02T16:06:30ZFull-color, large area, transmissive holograms enabled by multi-level diffractive optics10.1038/s41598-017-06229-52045-2322https://doaj.org/article/c4c8b9f934c94e788ffb15e955b72c892017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06229-5https://doaj.org/toc/2045-2322Abstract We show that multi-level diffractive microstructures can enable broadband, on-axis transmissive holograms that can project complex full-color images, which are invariant to viewing angle. Compared to alternatives like metaholograms, diffractive holograms utilize much larger minimum features (>10 µm), much smaller aspect ratios (<0.2) and thereby, can be fabricated in a single lithography step over relatively large areas (>30 mm ×30 mm). We designed, fabricated and characterized holograms that encode various full-color images. Our devices demonstrate absolute transmission efficiencies of >86% across the visible spectrum from 405 nm to 633 nm (peak value of about 92%), and excellent color fidelity. Furthermore, these devices do not exhibit polarization dependence. Finally, we emphasize that our devices exhibit negligible absorption and are phase-only holograms with high diffraction efficiency.Nabil MohammadMonjurul MeemXiaowen WanRajesh MenonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Nabil Mohammad
Monjurul Meem
Xiaowen Wan
Rajesh Menon
Full-color, large area, transmissive holograms enabled by multi-level diffractive optics
description Abstract We show that multi-level diffractive microstructures can enable broadband, on-axis transmissive holograms that can project complex full-color images, which are invariant to viewing angle. Compared to alternatives like metaholograms, diffractive holograms utilize much larger minimum features (>10 µm), much smaller aspect ratios (<0.2) and thereby, can be fabricated in a single lithography step over relatively large areas (>30 mm ×30 mm). We designed, fabricated and characterized holograms that encode various full-color images. Our devices demonstrate absolute transmission efficiencies of >86% across the visible spectrum from 405 nm to 633 nm (peak value of about 92%), and excellent color fidelity. Furthermore, these devices do not exhibit polarization dependence. Finally, we emphasize that our devices exhibit negligible absorption and are phase-only holograms with high diffraction efficiency.
format article
author Nabil Mohammad
Monjurul Meem
Xiaowen Wan
Rajesh Menon
author_facet Nabil Mohammad
Monjurul Meem
Xiaowen Wan
Rajesh Menon
author_sort Nabil Mohammad
title Full-color, large area, transmissive holograms enabled by multi-level diffractive optics
title_short Full-color, large area, transmissive holograms enabled by multi-level diffractive optics
title_full Full-color, large area, transmissive holograms enabled by multi-level diffractive optics
title_fullStr Full-color, large area, transmissive holograms enabled by multi-level diffractive optics
title_full_unstemmed Full-color, large area, transmissive holograms enabled by multi-level diffractive optics
title_sort full-color, large area, transmissive holograms enabled by multi-level diffractive optics
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/c4c8b9f934c94e788ffb15e955b72c89
work_keys_str_mv AT nabilmohammad fullcolorlargeareatransmissivehologramsenabledbymultileveldiffractiveoptics
AT monjurulmeem fullcolorlargeareatransmissivehologramsenabledbymultileveldiffractiveoptics
AT xiaowenwan fullcolorlargeareatransmissivehologramsenabledbymultileveldiffractiveoptics
AT rajeshmenon fullcolorlargeareatransmissivehologramsenabledbymultileveldiffractiveoptics
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