Direct (3+1)D laser writing of graded-index optical elements
Abstract
We propose single-step additive fabrication of graded-index optical elements by introducing the light exposure as the additional dimension to three-dimensional (3D) laser writing, hence (3+1)D writing. We use a commercial printer and photoresist to realize the proposed single step fabrication method that can be swiftly adopted for research and engineering. After presenting the characterization of the graded-index profiles via basic structures, we demonstrate two different optical devices: volume holograms that are superimposed using angular and peristrophic multiplexing, and optical waveguides with well-defined refractive index profiles. In the latter, we precisely control the propagating modes via tuning the (3+1)D-printed waveguide parameters and report step-index and graded-index core-cladding transitions.
Keywords
Cite
@article{arxiv.2106.01778,
title = {Direct (3+1)D laser writing of graded-index optical elements},
author = {Xavier Porte and Niyazi Ulas Dinc and Johnny Moughames and Giulia Panusa and Caroline Juliano and Muamer Kadic and Christophe Moser and Daniel Brunner and Demetri Psaltis},
journal= {arXiv preprint arXiv:2106.01778},
year = {2021}
}