Fiber Coupled Transceiver with 6.5 THz Bandwidth for Terahertz Time-Domain Spectroscopy in Reflection Geometry-Reference-Cited by-同舟云学术

Fiber Coupled Transceiver with 6.5 THz Bandwidth for Terahertz Time-Domain Spectroscopy in Reflection Geometry

Published:2020-05-04 Issue:9 Volume:20 Page:2616
ISSN:1424-8220
Container-title:Sensors
language:en
Short-container-title:Sensors

Author:

Kohlhaas Robert B.,Liebermeister Lars,Breuer Steffen,Amberg Marcel,Felipe David de,Nellen Simon^ORCID,Schell Martin,Globisch Björn

Abstract

We present a fiber coupled transceiver head for terahertz (THz) time-domain reflection measurements. The monolithically integrated transceiver chip is based on iron (Fe) doped In0.53Ga0.47As (InGaAs:Fe) grown by molecular beam epitaxy. Due to its ultrashort electron lifetime and high mobility, InGaAs:Fe is very well suited as both THz emitter and receiver. A record THz bandwidth of 6.5 THz and a peak dynamic range of up to 75 dB are achieved. In addition, we present THz imaging in reflection geometry with a spatial resolution as good as 130 µm. Hence, this THz transceiver is a promising device for industrial THz sensing applications.

Funder

Deutsche Forschungsgemeinschaft

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Link

https://www.mdpi.com/1424-8220/20/9/2616/pdf

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