paper 150204083625

We report on the observation and studies of the THz electroluminescence from 4H-SiC, 6H-SiC and 8H-SiC n+ -n− -n+ structures with natural superlattice under electrical field applied along the natural superlattice axis (along the C-crystal axis). It is shown that there are two channels of the terahertz electroluminescence, which are responsible for the narrow emis- sion lines at 5.3–12.7 meV and wider lines at 13 meV. The first emission channel can be well explained by the optical intraladder transitions in the Bloch oscillations regime. Presumably, the second emission channel is caused by optical interladder transitions between the states in different Wannier-Stark ladders.

Citation

A. V. Andrianov, Vladimir I. Sankin, S. S. Nagalyuk, A. G. Petrov, P. P. Shkrebiy, and Alexey O. Zakharin, "THz Generation of Bloch Oscillators from SiC Structures due to Strong Electric Fields," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)1033-1037

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