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Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Optical Systems

Humboldt-Universität zu Berlin | Faculty of Mathematics and Natural Sciences | Department of Physics | Optical Systems | Publications | Background-free spectroscopy of impurity transitions in semiconductors with a continuous-wave terahertz photomixer source

Martin Wienold, Sergey Pavlov, N. V Abrosimov, and Heinz-Wilhelm Hübers (2020)

Background-free spectroscopy of impurity transitions in semiconductors with a continuous-wave terahertz photomixer source

In: 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019).

We present a method for background-free spectroscopy of shallow impurity transitions in semiconductors with residual impurity concentrations. The method is based on a continuous wave terahertz photomixer source and a scheme for optically modulating the concentration of neutral impurities.

Terahertz spectroscopy, impurity transitions