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Universität zu Köln
Mathematisch-Naturwissenschaftliche Fakultät
Fachgruppe Physik

I. Physikalisches Institut

Patch Array QCL

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2D patch antenna array on a double metal quantum cascade laser

Matthias Justen, Christopher Bonzon, Keita Ohtani, Mathias Beck, Urs U. Graf, and Jérôme Faist (2016)


We developed patch array antennas for Terahertz quantum cascade lasers (QCLs) to improve the optical quality of the beams emitted by the devices. The design also includes an outcoupling reflector which can be adapted to the optimum reflectivity for a given laser.
This laser is the heart of the new 4.7 THz local oscillator for the HFA array of upGREAT on SOFIA


For Further informations contact: Dr. Matthias Justen