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discovered_01_2013

discovered 01.13 FOCUS WWW.Hzdr.DE // For many years, intense pulses in the invisible terahertz range have provoked much interest among scientists, because of this longwave radiation’s rather unique properties. At the present time, the strongest terahertz pulses are produced by using electron accelerators as drivers. A recent addition to the ELBE Center for High-Power Radiation Sources is a unique terahertz facility. Terahertz radiation is invisible as its wavelength far exceeds that of the visible light spectrum, bridging the gap between distant infrared light and microwaves. In contrast to X-rays, it is non- ionizing and therefore safe for humans. The HZDR already has two strong free electron lasers in the terahertz range, both of which emit radiation of a precisely defined wavelength - in other words, in just one color; the wavelength can be freely selected. The new TELBE source extends the spectral range of the terahertz radiation that is available at the ELBE Center _TEXT . Christine Bohnet Superradiant terahertz source DIAGNOSTIC LAB: Going forward, innovative types of experiments using terahertz radiation can be performed in this ELBE lab. Photo: Frank Bierstedt

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