Large-area, high-numerical-aperture multi-level diffractive lens via inverse design
Abstract
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 . 35 µ m , diameter of 4.13 mm, and N A = 0.9 at wavelength of 850 nm (bandwidth ∼ 35 n m ). Since the MDL is created in polymer, it can be cost-effectively replicated via imprint lithography.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 19, 2020
- Source ID
- 10.1364/optica.388697
Entities
People
- Apratim Majumder
- Berardi Sensale-Rodriguez
- Christian Pies
- Monjurul Meem
- Rajesh Menon
- Sourangsu Banerji
- Timo Oberbiermann
Organizations
- National Science Foundation
- Office of Naval Research