Abstract

A 3D printer was used to realize custom-made diffractive THz lenses. After testing several materials, phase binary lenses with periodic and aperiodic radial profiles were designed and constructed in polyamide material to work at 0.625 THz. The nonconventional focusing properties of such lenses were assessed by computing and measuring their axial point spread function (PSF). Our results demonstrate that inexpensive 3D printed THz diffractive lenses can be reliably used in focusing and imaging THz systems. Diffractive THz lenses with unprecedented features, such as extended depth of focus or bifocalization, have been demonstrated.

© 2016 Optical Society of America

3D-printed diffractive elements induced accelerating terahertz Airy beam

Changming Liu, Liting Niu, Kejia Wang, and Jinsong Liu
Opt. Express 24(25) 29342-29348 (2016)

Terahertz 3D printed diffractive lens matrices for field-effect transistor detector focal plane arrays

Krzesimir Szkudlarek, Maciej Sypek, Grzegorz Cywiński, Jarosław Suszek, Przemysław Zagrajek, Anna Feduniewicz-Żmuda, Ivan Yahniuk, Sergey Yatsunenko, Anna Nowakowska-Siwińska, Dominique Coquillat, Dmytro B. But, Martyna Rachoń, Karolina Węgrzyńska, Czesław Skierbiszewski, and Wojciech Knap
Opt. Express 24(18) 20119-20131 (2016)

Step-index optical fiber drawn from 3D printed preforms

Kevin Cook, Geoffrey Balle, John Canning, Loïc Chartier, Tristan Athanaze, M. A. Hossain, Chunyang Han, Jade-Edouard Comatti, Yanhua Luo, and Gang-Ding Peng
Opt. Lett. 41(19) 4554-4557 (2016)

3D printed long period gratings for optical fibers

Victor Lambin Iezzi, Jean-Sébastien Boisvert, Sébastien Loranger, and Raman Kashyap
Opt. Lett. 41(8) 1865-1868 (2016)

Analysis of 3D-printed metal for rapid-prototyped reflective terahertz optics

Daniel Headland, Withawat Withayachumnankul, Michael Webb, Heike Ebendorff-Heidepriem, Andre Luiten, and Derek Abbott
Opt. Express 24(15) 17384-17396 (2016)