Liquid immersion enables 3D printable diffractive optical elements

Reut Orange-Kedem, Elias Nehme, Lucien E. Weiss, Boris Ferdman, Onit Alalouf, Nadav Opatovski, Yoav Shechtman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Diffractive optical elements, used to shape the wavefront of incident light, are ubiquitous in optics thanks to the high flexibility in design and compactness that they offer [1]. However, the nanoscale-precision requirements typically necessitates a complicated fabrication process, e.g. nanolithography. Here we present the liquid immersed DOE. By immersing the DOE in liquid, i.e. decreasing the difference between the refractive indices of the DOE and the surrounding media, we can scale up the dimensions of the DOE from the nano-scale to the micro-scale (Fig. 1 ab), since the accumulated phase per DOE pixel can be described by:\begin{equation*}\Delta \phi = {{2\pi h}}{\lambda }\left( {{n_{DOE}} - {n_{media}}} \right), \tag{1}\end{equation*}where Δφ is the accumulated phase difference between light traversing the DOE compared to the surrounding media; λ is the wavelength; h is the height of the DOE; and n refers to the refractive index of the DOE material and surrounding media, respectively.

Original languageEnglish
Title of host publication2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
ISBN (Electronic)9781665418768
DOIs
StatePublished - Jun 2021
Event2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 - Munich, Germany
Duration: 21 Jun 202125 Jun 2021

Publication series

Name2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021

Conference

Conference2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
Country/TerritoryGermany
CityMunich
Period21/06/2125/06/21

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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