3D printable diffractive optical elements by liquid immersion

Reut Orange-Kedem, Elias Nehme, Lucien E. Weiss, Boris Ferdman, Onit Alalouf, Nadav Opatovski and Yoav Shechtman ()
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Reut Orange-Kedem: Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology
Elias Nehme: Lorry Lokey Interdisciplinary Center for Life Sciences and Engineering, Technion—Israel Institute of Technology
Lucien E. Weiss: Lorry Lokey Interdisciplinary Center for Life Sciences and Engineering, Technion—Israel Institute of Technology
Boris Ferdman: Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology
Onit Alalouf: Lorry Lokey Interdisciplinary Center for Life Sciences and Engineering, Technion—Israel Institute of Technology
Nadav Opatovski: Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology
Yoav Shechtman: Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology

Nature Communications, 2021, vol. 12, issue 1, 1-6

Abstract: Abstract Diffractive optical elements (DOEs) are used to shape the wavefront of incident light. This can be used to generate practically any pattern of interest, albeit with varying efficiency. A fundamental challenge associated with DOEs comes from the nanoscale-precision requirements for their fabrication. Here we demonstrate a method to controllably scale up the relevant feature dimensions of a device from tens-of-nanometers to tens-of-microns by immersing the DOEs in a near-index-matched solution. This makes it possible to utilize modern 3D-printing technologies for fabrication, thereby significantly simplifying the production of DOEs and decreasing costs by orders of magnitude, without hindering performance. We demonstrate the tunability of our design for varying experimental conditions, and the suitability of this approach to ultrasensitive applications by localizing the 3D positions of single molecules in cells using our microscale fabricated optical element to modify the point-spread-function (PSF) of a microscope.

Date: 2021
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DOI: 10.1038/s41467-021-23279-6

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