Roskos and Krozer Groups

Two research groups at the Goethe University Frankfurt am Main are represented in CELTA and participate in this ITN: Prof. Dr. Hartmut Roskos and Prof. Dr. Viktor Krozer.

The Roskos Group focuses on the investigation of ultrafast phenomena in solid-state materials (semiconductors, materials with strong electronic correlations, carbon nano-materials, etc.) and in devices via time-resolved femtosecond optical spectroscopy. Out of the work on devices developed a now independent and intensive research activity on the development of novel field-effect sources and detectors of THz radiation (from 300 GHz up to 9 THz), and on the application of these devices for sensing and imaging.

The Krozer Group focuses on THz electronics and photonics using solid-state electronics technology and optoelectronics. The work includes development of millimetre-wave imaging systems for various applications, tomography systems for biomedical applications, THz sensing, and biomedical research across a wide microwave frequency range. Research has focused on MMIC development in many technologies for radar and imaging applications, on biomedical sensing using planar sensor development for in-vivo and in-vitro studies of biological markers, and on non-destructive testing with mm-wave frequencies. This group is composed of three senior researchers, 2 PhD students, and a number of Master and Bachelor students.

Both groups cooperate in the area of biomedical sensing and spectroscopy and share laboratory infrastructure. Both groups have pioneered FET based THz detection using CMOS and GaN HEMT based detectors now reaching experimental operation at 9 THz. This work focuses on imaging and spectroscopy applications at THz frequencies. The group is composed of the two professors, two senior researchers, and a number of PhD and Master students. External fabrication facilities are also available for both technologies.

Link to Krozer Group and Roskos Group at GUF website