Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Fiber coupled transceiver with 6.5 THz bandwidth for terahertz time-domain spectroscopy in reflection geometry

 
: Kohlhaas, R.B.; Liebermeister, L.; Breuer, S.; Amberg, M.; Felipe, D. de; Nellen, S.; Schell, M.; Globisch, B.

:
Fulltext ()

Sensors. Online journal 20 (2020), No.9, Art. 2616, 12 pp.
http://www.mdpi.com/journal/sensors
ISSN: 1424-8220
ISSN: 1424-8239
ISSN: 1424-3210
English
Journal Article, Electronic Publication
Fraunhofer HHI ()

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.

: http://publica.fraunhofer.de/documents/N-596472.html