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Advances in OptoElectronics
Volume 2007, Article ID 54042, 9 pages
http://dx.doi.org/10.1155/2007/54042
Research Article

Semiconductor-Superlattice Parametric Oscillator as a Subterahertz and Possible Terahertz Radiation Source

Institute of Applied Physics, University of Regensburg, Regensburg 93040, Germany

Received 8 November 2006; Revised 29 January 2007; Accepted 31 January 2007

Academic Editor: Ralf B. Bergmann

Copyright © 2007 Karl F. Renk et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We describe the operation of a semiconductor-superlattice parametric oscillator (SPO) at a subterahertz frequency (near 300 GHz). The oscillator is driven by a microwave source (frequency near 100 GHz). We also present an analysis indicating that operation at frequencies above 1 THz should be possible. The SPO is based on the ability of conduction electrons in a superlattice to perform Bloch oscillations. Broadband tunability as well as the monochromacy of a driving microwave field are transferred to the SPO.