Terahertz refractive index matching solution

被引：16

作者：

Mavrona, Elena ^{[1
]}

Appugliese, Felice ^{[1
]}

Andberger, Johan ^{[1
]}

Keller, Janine ^{[1
]}

Franckie, Martin ^{[1
]}

Scalari, Giacomo ^{[1
]}

Faist, Jerome ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Inst Quantum Elect, Auguste Piccard Hof 1, CH-8093 Zurich, Switzerland

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 10期

基金：

瑞士国家科学基金会; 欧洲研究理事会;

关键词：

TIME-DOMAIN SPECTROSCOPY; THZ; METAMATERIAL; TECHNOLOGY; FIBER;

D O I：

10.1364/OE.27.014536

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the fabrication and characterisation of a terahertz (THz) refractive index matching solution (TeraSol) based on barium titanate (BaTiO3) particles and benzocyclobutene (BCB). The high refractive index of BaTiO3 in the THz range makes this material ideal for tuning the effective refractive index of the solution over a wide range. Exploiting the effective medium approximation, we are able to determine the concentration of BaTiO3 particles necessary to obtain target refractive index values between n = 1.8 and n = 5, optimised to match those of substrates widely used in the THz. TeraSol can dramatically reduce the reflections from the substrate during measurements with THz time domain spectroscopy at cryogenic and room temperature. These properties make TeraSol an appealing material for anti-reflective coatings. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：14536 / 14544

页数：9

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