Broadband imaging with one planar diffractive lens
Abstract
We demonstrate imaging over the visible band using a single planar diffractive lens. This is enabled via multi-level diffractive optics that is designed to focus over a broad wavelength range, which we refer to as an achromatic diffractive lens (ADL). We designed, fabricated and characterized two ADLs with numerical apertures of 0.05 and 0.18. Diffraction-limited focusing is demonstrated for the NA = 0.05 lens with measured focusing efficiency of over 40% across the entire visible spectrum (450 nm to 750 nm). We characterized the lenses with a monochromatic and a color CMOS sensor, and demonstrated video imaging under natural sunlight and other broadband illumination conditions. We use rigorous electromagnetic simulations to emphasize that ADLs can achieve high NA (0.9) and large operating bandwidth (300 nm in the visible spectrum), a combination of metrics that have so far eluded other flat-lens technologies such as metalenses. Here, these planar diffractive lenses can be cost-effectively manufactured over large areas and thereby, can enable the wide adoption of flat, low-cost lenses for a variety of imaging applications.
- Authors:
-
- Univ. of Utah, Salt Lake City, UT (United States)
- MACOM Technology Solutions, Ithaca, NY (United States)
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of Utah, Salt Lake City, UT (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1500121
- Grant/Contract Number:
- EE0005959
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Mohammad, Nabil, Meem, Monjurul, Shen, Bing, Wang, Peng, and Menon, Rajesh. Broadband imaging with one planar diffractive lens. United States: N. p., 2018.
Web. doi:10.1038/s41598-018-21169-4.
Mohammad, Nabil, Meem, Monjurul, Shen, Bing, Wang, Peng, & Menon, Rajesh. Broadband imaging with one planar diffractive lens. United States. https://doi.org/10.1038/s41598-018-21169-4
Mohammad, Nabil, Meem, Monjurul, Shen, Bing, Wang, Peng, and Menon, Rajesh. 2018.
"Broadband imaging with one planar diffractive lens". United States. https://doi.org/10.1038/s41598-018-21169-4. https://www.osti.gov/servlets/purl/1500121.
@article{osti_1500121,
title = {Broadband imaging with one planar diffractive lens},
author = {Mohammad, Nabil and Meem, Monjurul and Shen, Bing and Wang, Peng and Menon, Rajesh},
abstractNote = {We demonstrate imaging over the visible band using a single planar diffractive lens. This is enabled via multi-level diffractive optics that is designed to focus over a broad wavelength range, which we refer to as an achromatic diffractive lens (ADL). We designed, fabricated and characterized two ADLs with numerical apertures of 0.05 and 0.18. Diffraction-limited focusing is demonstrated for the NA = 0.05 lens with measured focusing efficiency of over 40% across the entire visible spectrum (450 nm to 750 nm). We characterized the lenses with a monochromatic and a color CMOS sensor, and demonstrated video imaging under natural sunlight and other broadband illumination conditions. We use rigorous electromagnetic simulations to emphasize that ADLs can achieve high NA (0.9) and large operating bandwidth (300 nm in the visible spectrum), a combination of metrics that have so far eluded other flat-lens technologies such as metalenses. Here, these planar diffractive lenses can be cost-effectively manufactured over large areas and thereby, can enable the wide adoption of flat, low-cost lenses for a variety of imaging applications.},
doi = {10.1038/s41598-018-21169-4},
url = {https://www.osti.gov/biblio/1500121},
journal = {Scientific Reports},
issn = {2045-2322},
number = 1,
volume = 8,
place = {United States},
year = {Mon Feb 12 00:00:00 EST 2018},
month = {Mon Feb 12 00:00:00 EST 2018}
}
Web of Science
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