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Paper detail

Large-area, high-NA Multi-level Diffractive Lens via inverse design

Flat lenses enable thinner, lighter, and simpler imaging systems. However, large-area and high-NA flat lenses have been elusive due to computational and fabrication challenges. Here, we applied inverse design to create a multi-level diffractive lens (MDL) with thickness <1.35μm, diameter of 4.13mm, NA=0.9 at wavelength of 850nm. Since the MDL is created in polymer, it can be cost-effectively replicated via imprint lithography.

preprint2020arXivOpen access
Monjurul MeemSourangsu BanerjiChristian PiesTimo OberbiermannBeradi Sensale-RodriguezRajesh Menon
eess.IVphysics.optics
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Monjurul MeemSourangsu BanerjiChristian PiesTimo OberbiermannBeradi Sensale-RodriguezRajesh Menon

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