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

Autor:	Robert B. Kohlhaas, Lars Liebermeister, Steffen Breuer, Marcel Amberg, David de Felipe, Simon Nellen, Martin Schell, Björn Globisch
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	THz time-domain spectroscopy photoconductive antennas THz transceiver THz imaging non-destructive testing Chemical technology TP1-1185
Zdroj:	Sensors, Vol 20, Iss 9, p 2616 (2020)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s20092616
Popis:	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.
Databáze:	Directory of Open Access Journals
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