Phys. Rev. Lett. 70, 3319 - 3322 (1993)Coherent submillimeter-wave emission from Bloch oscillations in a semiconductor superlattice |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1974: |
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
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/abstract/PRL/v70/p3319
DOI: 10.1103/PhysRevLett.70.3319
PACS: 73.20.Dx, 42.50.Md, 42.65.Re, 84.40.Cb
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