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Fiber-coupled, photoconductive receiver for heterodyne detection up to 1 THz stabilized by an optical frequency comb

: Nellen, S.; Globisch, B.; O'Gorman, J.; Anthur, A.P.; Vujicic, V.; Barry, L.; Schell, M.


Institute of Electrical and Electronics Engineers -IEEE-; IEEE Microwave Theory and Techniques Society:
42nd International Conference on Infrared, Millimeter, and Terahertz Waves 2017 : Cancun, Quintana Roo, Mexico, August 27-September 1, 2017
Piscataway, NJ: IEEE, 2017
ISBN: 978-1-5090-6050-4
ISBN: 978-1-5090-6048-1
ISBN: 978-1-5090-6049-8
ISBN: 978-1-5090-6051-1
International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) <42, 2017, Cancun>
Conference Paper
Fraunhofer HHI ()

An optoelectronic terahertz (THz) receiver for heterodyne detection of THz signals as low as 3 μW is demonstrated. To the best of our knowledge, this is the most sensitive optoelectronic heterodyne THz receiver to date. The intermediate frequency (IF) bandwidth of the detector is only limited by the used amplifier. The InGaAs-based photoconductor operating at 1.5 μm allows for a fully fiber-coupled receiver unit. This simplifies its use for spectroscopy and THz communication.