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Phys. Rev. Lett. 70, 3319–3322 (1993)

Coherent submillimeter-wave emission from Bloch oscillations in a semiconductor superlattice

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Christian Waschke, Hartmut G. Roskos, Ralf Schwedler, Karl Leo, and Heinrich Kurz
Institut für Halbleitertechnik II, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Sommerfeldstrasse 24, 5100 Aachen, Germany

Klaus Köhler
Fraunhofer-Institut für Angewandte Festkörperphysik, Tullastrasse 72, 7800 Freiburg, Germany

Received 22 January 1993; published in the issue dated 24 May 1993

We directly detect the coherent electromagnetic radiation originating from Bloch oscillations of charge carriers in an electrically biased semiconductor superlattice structure. The oscillation frequency can be tuned with the applied bias field from 0.5 THz to more than 2 THz, the detection limit of our measurement system.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.70.3319
DOI:
10.1103/PhysRevLett.70.3319
PACS:
73.20.Dx, 42.50.Md, 42.65.Re, 84.40.Cb