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Title: Chromatic-aberration-corrected diffractive lenses for ultra-broadband focusing

Abstract

We exploit the inherent dispersion in diffractive optics to demonstrate planar chromatic-aberration-corrected lenses. Specifically, we designed, fabricated and characterized cylindrical diffractive lenses that efficiently focus the entire visible band (450 nm to 700 nm) onto a single line. These devices are essentially pixelated, multi-level microstructures. Experiments confirm an average optical efficiency of 25% for a three-wavelength apochromatic lens whose chromatic focus shift is only 1.3 μm and 25 μm in the lateral and axial directions, respectively. Super-achromatic performance over the continuous visible band is also demonstrated with averaged lateral and axial focus shifts of only 1.65 μm and 73.6 μm, respectively. These lenses are easy to fabricate using single-step grayscale lithography and can be inexpensively replicated. Furthermore, these devices are thin (<3 μm), error tolerant, has low aspect ratio (<1:1) and offer polarization-insensitive focusing, all significant advantages compared to alternatives that rely on metasurfaces. Lastly, our design methodology offers high design flexibility in numerical aperture and focal length, and is readily extended to 2D.

Authors:
 [1];  [1];  [1]
  1. Univ. of Utah, Salt Lake City, UT (United States)
Publication Date:
Research Org.:
Univ. of Utah, Salt Lake City, UT (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1242246
Grant/Contract Number:  
EE0005959
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; imaging and sensing; micro-optics

Citation Formats

Wang, Peng, Mohammad, Nabil, and Menon, Rajesh. Chromatic-aberration-corrected diffractive lenses for ultra-broadband focusing. United States: N. p., 2016. Web. doi:10.1038/srep21545.
Wang, Peng, Mohammad, Nabil, & Menon, Rajesh. Chromatic-aberration-corrected diffractive lenses for ultra-broadband focusing. United States. https://doi.org/10.1038/srep21545
Wang, Peng, Mohammad, Nabil, and Menon, Rajesh. 2016. "Chromatic-aberration-corrected diffractive lenses for ultra-broadband focusing". United States. https://doi.org/10.1038/srep21545. https://www.osti.gov/servlets/purl/1242246.
@article{osti_1242246,
title = {Chromatic-aberration-corrected diffractive lenses for ultra-broadband focusing},
author = {Wang, Peng and Mohammad, Nabil and Menon, Rajesh},
abstractNote = {We exploit the inherent dispersion in diffractive optics to demonstrate planar chromatic-aberration-corrected lenses. Specifically, we designed, fabricated and characterized cylindrical diffractive lenses that efficiently focus the entire visible band (450 nm to 700 nm) onto a single line. These devices are essentially pixelated, multi-level microstructures. Experiments confirm an average optical efficiency of 25% for a three-wavelength apochromatic lens whose chromatic focus shift is only 1.3 μm and 25 μm in the lateral and axial directions, respectively. Super-achromatic performance over the continuous visible band is also demonstrated with averaged lateral and axial focus shifts of only 1.65 μm and 73.6 μm, respectively. These lenses are easy to fabricate using single-step grayscale lithography and can be inexpensively replicated. Furthermore, these devices are thin (<3 μm), error tolerant, has low aspect ratio (<1:1) and offer polarization-insensitive focusing, all significant advantages compared to alternatives that rely on metasurfaces. Lastly, our design methodology offers high design flexibility in numerical aperture and focal length, and is readily extended to 2D.},
doi = {10.1038/srep21545},
url = {https://www.osti.gov/biblio/1242246}, journal = {Scientific Reports},
issn = {2045-2322},
number = ,
volume = 6,
place = {United States},
year = {Fri Feb 12 00:00:00 EST 2016},
month = {Fri Feb 12 00:00:00 EST 2016}
}

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Cited by: 109 works
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Works referencing / citing this record:

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