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Seminaire ICE, Jeudi 7 janvier à 14h : "Compact terahertz time-spectroscopy systems enabled by mode-locked laser diodes"

Le prochain séminaire mensuel du département "Information, communications, électronique" d’IP Paris aura lieu jeudi 7 janvier 2021, à 14h00.
Vous trouverez ci-dessous le thème de ce premier séminaire de l’année 2021 ainsi qu’une biographie de l’orateur.

Le séminaire se tiendra en visio :
https://telecom-paris.zoom.us/j/96093506231?pwd=d0hQb0VmQ3pSRmRMUzFrSFg2SGdTUT09

Compact terahertz time-spectroscopy systems enabled by mode-locked laser diodes

Pr. Dr.-Ing. Jan C. BALZER, Communication Systems, Faculty of Engineering
University of Duisburg-Essen, Germany

Abstract
Terahertz time-domain spectroscopy (THz-TDS) is a spectroscopy method for the frequency range roughly between 100 GHz and 10 THz. Some materials, e.g explosives, have a spectral fingerprint in this region. That makes the technology ideal for security applications. Futher applications areas are communication, nondestructive testing, fundamental research, and material characterization. The development of THz-TDS is closely related to the advancement of ultrafast laser : first systems were driven by dye laser which were quickly replaced by solid state lasers. State-of-the-art systems are driven by more compact ultrafast fiber lasers. To further reduce costs and size of these systems, mode-locked laser diodes (MLLD)are an interesting alternative.

In this presentation, I will give a brief overview of THz-TDS and its applications. In the second part, I will present methods to reduce the size and costs of a THz-TDS system by employing MLLDs.

Bio


Jan C. BALZER was born in Unna, Germany, in 1984. He received the Dipl.-Ing. (FH) degree in telecommunications from the university of applied science Dortmund, Germany in 2008, the MSc degree in electrical engineering and information technology from the Ruhr-Universität Bochum, Germany in 2010, and the PhD degree in electrical engineering for his work on ultrafast semiconductor lasers in 2014. In 2015, he joined as postdoctoral research fellow the group of Martin KOCH at the Philipp-Universität Marburg with his main research interests in THz technology and its applications. Since 2017, he is assistant professor at the faculty of engineering at the University of Duisburg-Essen where he combines his knowledge of ultrafast semiconductor lasers with his expertise in system building of THz spectrometers.