Kann Star Trek Realität werden? : Optische Sensoren mit Terahertz-Durchblick

Einen kompakten Materialsensor, der eine Vielzahl von Materialien zuverlässig erkennen kann, sich mobil einsetzen lässt und am besten auch noch gleich den genauen Ort des untersuchten Objekts erkennt, gibt es noch nicht. Aber die Entwicklungsgeschichte zeigt uns: Es besteht Hoffnung.
It is the aim of the photonikSensor project to develop a novel coherent photonic sensor for characterizing objects with respect to its material composition and to localize them. The sensor is expected to operate in the sub-/millimeter-wave regime at frequencies beyond 250 GHz. The novelty of the photonikSensor is that it utilizes photonic heterodyning for the generation but also for the detection of the high-frequency signals. By doing so, we expect being able to allow for much wider frequency tuning as compared to all-electronic solutions and this would immediately help us in detecting the spectral finger prints of a variety of different materials. The three Ruhr universities closely cooperate in photonik- Sensor. Ruhr-University Bochum (RUB) contributes by providing a compact dual-wavelength laser operating at 1.55 μm wavelength, Technical University Dortmund (TUD) provides the required know-how for the digital signal processing of the measurement data and in the theoretical analysis of the sensor system and the wireless channel. University of Duisburg-Essen (UDE) coordinates the photonikSensor project and is responsible for setting up the sensor system. UDE also provides the photonic-based terahertz transmitter and receiver.
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