Attenuation of THz Beams: A "How to" Tutorial

被引：19

作者：

Kaltenecker, Korbinian J. ^{[1
]}

Kelleher, Edmund J. R. ^{[1
]}

Zhou, Binbin ^{[1
]}

Jepsen, Peter Uhd ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Photon Engn, DK-2800 Lyngby, Denmark

来源：

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2019年 / 40卷 / 08期

关键词：

Attenuation of terahertz beams; Time-domain measurements; Tutorial; TIME-DOMAIN SPECTROSCOPY; TRANSMISSION COEFFICIENTS; TERAHERTZ PULSES; WIRE GRIDS; GENERATION; SILICON; AIR;

D O I：

10.1007/s10762-019-00608-x

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Attenuation of ultrashort THz pulses poses a significant technological challenge due to the broadband nature of such light pulses. Several methods exist for this purpose, including crossed wire grid polarizers, high refractive index, high resistivity silicon wafers, and ultrathin metal films. In this review, we discuss the operational principles of these methods, and highlight some of the advantages and potential pitfalls of the methods. We describe the limits of high-frequency operation of wire grid polarizers, relevant for contemporary ultra-broadband THz sources in air photonics. We discuss the effects of multiple reflections and interference in sequences of silicon wafers for attenuation, and finally discuss the potential of using ultrathin metallic films for broadband attenuation.

引用

页码：878 / 904

页数：27

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