3D-Printed Phase Waveplates for THz Beam Shaping
Abstract
The advancement of 3D-printing opens up a new way of constructing affordable custom terahertz (THz) components due to suitable printing resolution and THz transparency of polymer materials. We present a way of calculating, designing and fabricating a THz waveplate that phase-modulates an incident THz beam ({\lambda}=2.14 mm) in order to create a predefined intensity profile of the optical wavefront on a distant image plane. Our calculations were performed for two distinct target intensities with the use of a modified Gerchberg-Saxton algorithm. The resulting phase-modulating profiles were used to model the polyactide elements, which were printed out with a commercially available 3D-printer. The results were tested in an THz experimental setup equipped with a scanning option and they showed good agreement with theoretical predictions.
Cite
@article{arxiv.1803.07894,
title = {3D-Printed Phase Waveplates for THz Beam Shaping},
author = {Jan Gospodaric and Artem Kuzmenko and Anna Pimenov and Christian Huber and Dieter Suess and Stefan Rotter and Andrei Pimenov},
journal= {arXiv preprint arXiv:1803.07894},
year = {2018}
}
Comments
4 pages, 3 figures