Josephson Cantilevers for THz Microscopy of Additive Manufactured Diffractive Optical Components

Hampel, Benedikt; Tollkuhn, Marco; Elenskiy, Ilya; Martens, M.; Kajevic, Denis; Schilling, Meinhard

doi:10.1109/tasc.2019.2896153

Cited by 14 publications

(4 citation statements)

References 11 publications

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“…The diffraction grating is the first association coming to mind when thinking about the redirecting of radiation. For THz range, they can be easily manufactured by 3D printing and after metalization they can work in a reflection mode [ 7 ] or if a proper material is used, they can work in a transmission mode [ 4 ]. As mentioned before such a manufacturing technique has a sufficient resolution to produce blazed gratings.…”

Section: Redirecting Of Incident Radiationmentioning

confidence: 99%

“…Depending on the functioning of the element (focusing, redirecting, splitting, etc.) [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ] such structures have different shapes. They can look like Fresnel lenses, spirals, maps of mountains, peacock eyes, hyperbolas or some other shapes, also looking like totally arbitrary random patterns [ 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

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The Magic of Optics—An Overview of Recent Advanced Terahertz Diffractive Optical Elements

Siemion

2020

Sensors

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Diffractive optical elements are well known for being not only flat but also lightweight, and are characterised by low attenuation. In different spectral ranges, they provide better efficiency than commonly used refractive lenses. An overview of the recently invented terahertz optical structures based on diffraction design is presented. The basic concepts of structure design together with various functioning of such elements are described. The methods for structure optimization are analysed and the new approach of using neural network is shown. The paper illustrates the variety of structures created by diffractive design and highlights optimization methods. Each structure has a particular complex transmittance that corresponds to the designed phase map. This precise control over the incident radiation phase changes is limited to the design wavelength. However, there are many ways to overcome this inconvenience allowing for broadband functioning.

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Section: Redirecting Of Incident Radiationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Magic of Optics—An Overview of Recent Advanced Terahertz Diffractive Optical Elements

Siemion

2020

Sensors

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show abstract

“…Organic optical resin is a kind of transparent polymer material, which has the advantages of light weight, good impact resistance, easy processing and strong tunability [1–4] . It gradually replaces the traditional inorganic optical glass, in the resin lens, precision optical components, building materials, optical film and other fields, and has been widely used [5–7] .…”

Section: Introductionmentioning

confidence: 99%

“…Organic optical resin is a kind of transparent polymer material, which has the advantages of light weight, good impact resistance, easy processing and strong tunability. [1][2][3][4] It gradually replaces the traditional inorganic optical glass, in the resin lens, precision optical components, building materials, optical film and other fields, and has been widely used. [5][6][7] Among optical resins, polycarbonate is becoming more and more popular in optical applications due to its high transparency, high refractive index, high heat resistance and good plasticity.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Optical Properties of Co‐polycarbonates Based on Binaphthalene and Cardo Structures

Long

Sun

et al. 2023

ChemistrySelect

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Copolymer carbonate was synthesized from diphenyl carbonate (DPC), 9, 9-bis [3-phenyl-4 -(2-hydroxyethoxy) phenyl] fluorene (BPPEF) and 2,2' -bis (2-hydroxy-ethoxy)-1,1' -binaphthalene (BHEBN) by melt transesterification. The composition and random structure of the copolymer were determined by FT-IR, 1 H NMR and 13 C NMR analysis. DSC and TGA analysis showed that Cardo structure could significantly increase the glass transition temperature and thermal decomposition temperature. With the addition of BHEBN, the refractive index of copolymer was increased, but the thermal properties of copolymer were decreased. It is found that the contribution of naphthalene structure to the refractive index of the polymer material is higher than that of benzene structure. When the dosage of BHEBN is 42 mol %, the glass transition temperature (Tg) of the copolymer is 141.8 °C, the maximum thermal decomposition temperature is 421.9 °C, the refractive index is 1.6535, the Abbe number is 21, the transmittance is 88.29 %, and the birefringence is negative 0.01 × 10 À 3 .

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Synthesis and optical properties of co-polycarbonate containing Cardo structure and binaphthalene structure

Li,

Wang,

Wang

2024

J Polym Res

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Josephson Cantilevers for THz Microscopy of Additive Manufactured Diffractive Optical Components

Cited by 14 publications

References 11 publications

The Magic of Optics—An Overview of Recent Advanced Terahertz Diffractive Optical Elements

The Magic of Optics—An Overview of Recent Advanced Terahertz Diffractive Optical Elements

Study on the Preparation and Optical Properties of Co‐polycarbonates Based on Binaphthalene and Cardo Structures

Synthesis and optical properties of co-polycarbonate containing Cardo structure and binaphthalene structure

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