6533b854fe1ef96bd12aeb19
RESEARCH PRODUCT
3D printed diffractive terahertz lenses
Przemyslaw ZagrajekWalter D. FurlanVicente FerrandoMieczyslaw SzustakowskiElżbieta CzerwińskaJuan A. Monsoriusubject
DiffractionPoint spread function3d printedMaterials scienceTerahertz radiationPhase (waves)Diffractive lensesBinary optics02 engineering and technologyDiffraction efficiency01 natural sciences010309 opticsDiffractive lensOpticsImage quality assessment0103 physical sciencesDiffractive opticsExtended depth of focusbusiness.industry021001 nanoscience & nanotechnologyAtomic and Molecular Physics and OpticsTerahertz imagingFISICA APLICADAOptical fabrication0210 nano-technologybusinessdescription
[EN] 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 |