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Department Terahertz and Laser Spectroscopy

 

The department has a long tradition in the infrared and terahertz (THz)- and laboratory spectroscopy. On this basis, we participate in a large number of projects. The analysis of the data that were recorded with these instruments, is an important area of research. In particular we work in these areas:

GREAT on SOFIA

The airborne observatory SOFIA offers a unique access to the astronomically hardly explored THz spectral range with the latest technologies. With the spectrometers GREAT/upGREAT it is for the first time possible to detect the important atomic oxygen line at 4.7 THz with high spectral resolution. The enabling technology for these measurements is a THz laser system developed at DLR.

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Quantum Cascade Lasers

Quantum Cascade Lasers (QCLs) for the terahertz range are bright and narrow band semiconductor laser sources. QCLs in the range of 2.5-5.5 THz emit typically several mW of output power and exhibit free-running line widths in the MHz range.

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THz Imaging

THz images are performed with only a single sensor - so called one pixel cameras - without mechanical movement of the detector.

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THz Molecular Spectroscopy

The identification of gases is of great interest in many fields. E.g. the analysis of human breath has a large medical potential because it contains several hundreds of volatile organic compounds.

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Superconducting Detectors

The superconducting nanowire single photon detector (SNSPD) is a type of detector with single-photon sensitivity for the spectral range from visible light to THz waves.

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Solid State Spectroscopy

Fundamental characteristics of solids can be accessed by complementary optical absorption, luminescence and Raman scattering spectroscopies as well as by time resolved techniques.

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THz Silicon Lasers

Solid state optically pumped THz lasers based on impurity transitions of silicon crystals emit at different frequencies depending on pump wavelength and intensity.

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Laser Induced Breakdown Spectroscopy (LIBS)

Laser Induced Breakdown Spectroscopy (LIBS) is a powerful analytical technique that permits rapid in-situ multielemental analysis and has high potential for application in planetary science.

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Raman Spectroscopy

Raman spectroscopy is a nondestructive technique for material identification. It is fast, unique, and needs no preparation of the investigated sample and is thus very suitable for measurements in extreme situations and environments.

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Kontakt
Prof. Dr. Michael Gensch
Head of the Department

German Aerospace Center (DLR)
Rutherfordstr.2
12489 Berlin

Phone:03067055-8040

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