FWF-funded (doc.funds.connect) doctoral programme „FutureTHz“

The terahertz (THz) frequency range has been one of the focal points of intensive research and development worldwide in recent decades. This interest is driven by both scientific and practical reasons. Scientifically, conventional electronic and optical devices are unable to operate at THz frequencies, requiring the development of unconventional devices and systems. Moreover, as electronics and optics converge at THz frequencies, researchers must consider THz devices from both perspectives of electronics and optics/photonics, creating opportunities for deeper understanding of their operational principles.

Practically, THz technology holds great promise for applications in fields such as medical diagnostics, security, sensing, wireless communication, and earth observation. However, the full scope of THz applications remains to be identified and may extend well beyond these areas. A significant challenge hindering the practical use of THz technology is the lack of compact, cost-effective THz sources that can deliver high power, but also feature precise phase and frequency control.

The doctoral program “FutureTHz” targets exactly this challenge. The program is centered around one of the most promising THz sources: resonant-tunneling-diode (RTD) oscillators. This project systematically investigates the nonlinearities in RTD oscillators, develops accurate analytical and numerical models, validates them experimentally, and explores the use of RTD oscillators in certain application scenarios. A key focus is on in-depth understanding of a technique known as injection locking for achieving precise frequency and phase control of RTD oscillators.

Participating organisations

Project team

Coordinator: Univ. Prof. Dr. Michael Feiginov (TU Wien)

Principle investigators: