Ruhr University Bochum (RUB)
The Ruhr University Bochum, founded in 1962, is one of the largest universities in Germany and is located in the heart of the Ruhr Area, one of Europe’s largest metropolitan regions. With more than 38,800 students, including over 6,400 international students, and 21 faculties, RUB offers a comprehensive academic portfolio spanning the humanities, social sciences, natural sciences, medicine, and engineering.
Research at RUB is shaped by strong interdisciplinary networks, including nine Collaborative Research Centers and two Clusters of Excellence, supported by over 6,300 researchers and staff. Graduate education is fostered by the RUB Research School, an internationally recognized model for training and supporting early-career researchers. RUB also promotes knowledge transfer and entrepreneurship through the WORLDFACTORY Start-up Center NRW.
Photonics and Terahertz Technology (PTT)
Chair for Photonics and Terahertz Technology is part of the Department of Electrical Engineering and Information Technology and has been active in spin-optoelectronic research for over 20 years. The group is internationally recognized for pioneering work on spin-lasers and spin-LEDs, including the first demonstration of electrical spin injection at room temperature, spin-filtering in photodetectors, and ultrafast spin-laser dynamics. Headed by Prof. Martin R. Hofmann, the group combines expertise in spintronics, laser gain dynamics, optical imaging, and terahertz technology. PTT’s laboratories are fully equipped for temporal, spectral, and polarization-resolved analysis of spin devices. Core facilities include femtosecond Ti:Sapphire lasers, a streak camera with ~2 ps resolution, Stokes polarimeters, as well as magnetic field systems (electromagnets and superconducting magnets). High-resolution optical spectrum analyzers, HF measurement setups, and fast photodiodes up to 25 GHz further support precise optoelectronic device characterization.
Martin Hofmann
