Inkjet printed conductive polymer-based beam-splitters for terahertz applications

Ung, Benjamin S.-Y.; Weng, Bo; Shepherd, Roderick; Abbott, Derek

doi:10.1364/ome.3.001242

Cited by 22 publications

(10 citation statements)

References 34 publications

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“…However, while development of terahertz sources and detectors have improved the sensitivity and efficiency of these devices, terahertz optical components such as lenses [4,5], beam splitters [6,7], absorbers [8], wave plates [9,10], and polarizers still remain in the primitive stages of development. In particular, terahertz linear polarizers and basic polarization selective elements are useful to study (for example) the birefringent properties of materials (such as liquid crystals) and the polarization sensitivity of terahertz sources and detectors [11].…”

mentioning

confidence: 99%

High extinction ratio and low transmission loss thin-film terahertz polarizer with a tunable bilayer metal wire-grid structure

et al. 2014

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A thin-film terahertz polarizer is proposed and realized via a tunable bilayer metal wire-grid structure to achieve high extinction ratios and good transmission. The polarizer is fabricated on top of a thin silica layer by standard micro-fabrication techniques to eliminate the multireflection effects. The tunable alignment of the bilayer aluminum-wire grid structure enables tailoring of the extinction ratio and transmission characteristics. Using terahertz time-domain spectroscopy (THz-TDS), a fabricated polarizer is characterized, with extinction ratios greater than 50 dB and transmission losses below 1 dB reported in the 0.2-1.1 THz frequency range. These characteristics can be improved by further tuning the polarizer parameters such as the pitch, metal film thickness, and lateral displacement.

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confidence: 99%

High extinction ratio and low transmission loss thin-film terahertz polarizer with a tunable bilayer metal wire-grid structure

et al. 2014

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“…The most frequently used materials for fabricating THz components are Teflon, TPX [6], Zeonex [7], TOPAS [8] polytetrafluoroethylene (PE) [9], and high-density polyethylene (HDPE) [10]. Another material is high-resistivity silicon [11]; however more materials can be used in manufacturing THz beam shaping objects, for example, conductive polymers [12], metal [13,14], natural stone [15], and metamaterials [16]. It should be noticed that 2 Advances in Materials Science and Engineering more and more 3D printed materials, like polyamide 12 or other plastics [17,18], are used to manufacture diffractive optical elements.…”

Section: Materials For Thzmentioning

confidence: 99%

Paper on Designing Costless THz Paper Optics

Siemion

Kostrowiecki-Lopata

Pindur

et al. 2016

Advances in Materials Science and Engineering

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Designing diffractive optical elements is crucial for efficient development of THz techniques. Here, we consider paper structures and we analyze their advantages and disadvantages in fast prototyping. The discussion about using material parameters like refractive index and absorption coefficient in designing diffractive optical elements is shown. We analyze the influence of phase step mismatch, of attenuation of real structure, and of nonuniform illumination on the efficiency of the structure. All these features result in worsening of the diffraction efficiency but they do not seem to have such significant influence as shadow effect introduced by fast varying zones. Diffractive elements can be designed with very good accordance with experimental results which makes them ideal for possible applications. Paper optics scan be used more for fast prototyping; nevertheless its performance can be increased by placing it inside water protecting foil.

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“…As an essential part of a terahertz wave system, terahertz wave manipulation is highly required. Different functional THz devices have been reported, such as modulator [1], filters [2,3], switches [4][5][6], phase shifters [7], polarizers [8], absorbers [9,10], and splitters [11][12][13]. We all know that terahertz wave filter is a kind of important signal processing device [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Terahertz Transmission Characteristics of Free-Standing Fractal Jesus-Cross Structure

Xiong

2020

Front. Phys.

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We have fabricated a Jesus-cross structure on aluminum foil using the femtosecond laser technique. Using the terahertz time-domain spectroscopy (THz-TDS) system, the transmission properties of free-standing double-layer crossing fractal structure are tested. The parameters of the proposed structure were optimized using the finite element frequency domain technology of commercial software CST Microwave Studio package. The dimensions of the aluminum foil periodically patterned with crossing fractal structure are 1.5 × 1.5 cm 2 . The resonant frequencies of the proposed structure are 0.216 and 0.735 THz with 3-dB bandwidths of 62 and 15 GHz, respectively. The transmission ratio can reach to 0.89 and 0.57. It indicates the structure having dual-band filtering performance. This work has the potential to open a new avenue as a filter working for free-space terahertz radiation.

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Inkjet printed conductive polymer-based beam-splitters for terahertz applications

Cited by 22 publications

References 34 publications

High extinction ratio and low transmission loss thin-film terahertz polarizer with a tunable bilayer metal wire-grid structure

High extinction ratio and low transmission loss thin-film terahertz polarizer with a tunable bilayer metal wire-grid structure

Paper on Designing Costless THz Paper Optics

Terahertz Transmission Characteristics of Free-Standing Fractal Jesus-Cross Structure

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