3D printed diffractive terahertz lenses

Furlan, Walter D.; Ferrando, Vicente; Monsoriu, Juan A.; Zagrajek, Przemysław; Czerwińska, Elżbieta; Szustakowski, Mieczysław

doi:10.1364/ol.41.001748

Cited by 119 publications

(56 citation statements)

References 21 publications

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“…This is especially apparent in passive dielectric devices. Diffraction gratings [10] have been demonstrated, as have a range of lenses [11][12][13] and Quasi-Wollaston prisms [27]. In these devices, bulk absorption in the thermoplastic used leads to high absorption losses.…”

Section: Summary Of 3d Printing and Terahertz Researchmentioning

confidence: 99%

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Feasibility and Characterization of Common and Exotic Filaments for Use in 3D Printed Terahertz Devices

Squires

Lewis

2018

J Infrared Milli Terahz Waves

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Recent years have seen an influx of applications utilizing 3D printed devices in the terahertz regime. The simplest, and perhaps most versatile, modality allowing this is Fused Deposition Modelling. In this work, a holistic analysis of the terahertz optical, mechanical and printing properties of 17 common and exotic 3D printer filaments used in Fused Deposition Modelling is performed. High impact polystyrene is found to be the best filament, with a useable frequency range of 0.1-1.3 THz, while remaining easily printed. Nylon, polylactic acid and polyvinyl alcohol give the least desirable terahertz response, satisfactory only below 0.5 THz. Interestingly, most modified filaments aimed at increasing mechanical properties and ease of printing do so without compromising the useable terahertz optical window. Abstract Recent years have seen an influx of applications utilizing 3D printed devices in the terahertz regime. The simplest, and perhaps most versatile, modality allowing this is Fused Deposition Modelling. In this work, a holistic analysis of the terahertz optical, mechanical and printing properties of 17 common and exotic 3D printer filaments used in Fused Deposition Modelling is performed. High impact polystyrene is found to be the best filament, with a useable frequency range of 0.1-1.3 THz, while remaining easily printed. Nylon, polylactic acid and polyvinyl alcohol give the least desirable terahertz response, satisfactory only below 0.5 THz. Interestingly, most modified filaments aimed at increasing mechanical properties and ease of printing do so without compromising the useable terahertz optical window.

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Section: Summary Of 3d Printing and Terahertz Researchmentioning

confidence: 99%

“…These modifications are aimed at enhancing optical (visible), mechanical and printing properties of the thermoplastic material. Lenses TOPAS Busch [13] Nylon Furlan [11] Visijet Crystal Squires [10] FullCure835 VeroWhite Zhang [12] 3 Experiment…”

Section: Summary Of 3d Printing and Terahertz Researchmentioning

confidence: 99%

Feasibility and Characterization of Common and Exotic Filaments for Use in 3D Printed Terahertz Devices

Squires

Lewis

2018

J Infrared Milli Terahz Waves

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“…As a cost-effective, fast, convenient fabrication technique, 3D printing is able to produce devices accurately with good repeatability, and hence it has attracted much attention for the fabrication of functional THz components, such as waveguides [17], [18], [38], fibers [39], lenses [40], antenna horns [41], and sensors [19]. 3D printing is also ideal for the fabrication of highly porous structures, which is a challenge for other techniques, such as molding, drawing, rolling, and extrusion, owing to the deformation encountered during processing [7].…”

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confidence: 99%

Low-Loss Asymptotically Single-Mode THz Bragg Fiber Fabricated by Digital Light Processing Rapid Prototyping

Hong

Swithenbank

Greenall

et al. 2018

IEEE Trans. THz Sci. Technol.

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Abstract-In this paper, the design and measurement of a 3D-printed low-loss asymptotically single-mode hollow-core terahertz Bragg fiber is reported, operating across the frequency range from 0.246 to 0.276 THz. The HE11 mode is employed as it is the lowest loss propagating mode, with the electromagnetic field concentrated within the air core as a result of the photonic crystal bandgap behavior. The HE11 mode also has large loss discrimination compared to its main competing HE12 mode. This results in asymptotically single-mode operation of the Bragg fiber, which is verified by extensive simulations based on the actual fabricated Bragg fiber dimensions and measured material parameters. The measured average propagation loss of the Bragg fiber is lower than 5 dB/m over the frequency range from 0.246 to 0.276 THz, which is, to the best of our knowledge, the lowest loss asymptotically single-mode all-dielectric microstructured fiber yet reported in this frequency range, with a minimum loss of 3 dB/m at 0.265 THz.Index Terms-Bragg fiber, electromagnetic propagation, millimeter wave technology, photonic crystals, three-dimensional printing.

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“…In the microwave and sub-millimetric wave fields, the use of additive manufacturing has grown. Recent works report the fabrication of waveguides, beam splitters, plasmonic devices, lenses, and antennas [56][57][58][59]. This great interest is due to the compatibility of the fabrication scale, the availability of several materials, fast processes, reproducibility, and low cost.…”

Section: Additive Manufacturing Technologymentioning

confidence: 99%

3D Printed Hollow-Core Terahertz Fibers

Cruz

Cordeiro

Franco

2018

Fibers

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This paper reviews the subject of 3D printed hollow-core fibers for the propagation of terahertz (THz) waves. Several hollow and microstructured core fibers have been proposed in the literature as candidates for low-loss terahertz guidance. In this review, we focus on 3D printed hollow-core fibers with designs that cannot be easily created by conventional fiber fabrication techniques. We first review the fibers according to their guiding mechanism: photonic bandgap, antiresonant effect, and Bragg effect. We then present the modeling, fabrication, and characterization of a 3D printed Bragg and two antiresonant fibers, highlighting the advantages of using 3D printers as a path to make the fabrication of complex 3D fiber structures fast and cost-effective.

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3D printed diffractive terahertz lenses

Cited by 119 publications

References 21 publications

Feasibility and Characterization of Common and Exotic Filaments for Use in 3D Printed Terahertz Devices

Feasibility and Characterization of Common and Exotic Filaments for Use in 3D Printed Terahertz Devices

Low-Loss Asymptotically Single-Mode THz Bragg Fiber Fabricated by Digital Light Processing Rapid Prototyping

3D Printed Hollow-Core Terahertz Fibers

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