justen[at]ph1.uni-koeln.de

CHAI instrumentation, RF design, SIS mixer design, receiver electronics design
Research interest: Hardware development for superconducting heterodyne receivers

2000 Univesity of Würzburg: Diploma in physics: X-ray circular dicroism, USAXS

2000-2006 PHD in physics. Title: Broadband IF Circuits for SIS Mixers for the HIFI Instrument on the Herschel Space Observatory and for Sideband Separating Mixers.

2007-present: PostDoc, University of Cologne
2007-2010 development of SIS and HEB superconducting mixers, instrument scientist for NANTEN2
2011-2022 quantum cascade laser (QCL) development, local oscillator development for 4.7THz for SOFIA, instrument scientist for upGREAT on SOFIA.
2022-present CHAI development