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Proceedings Paper

Plasmon-based terahertz laser without population inversion
Author(s): Krzysztof Kempa; Pradip M. Bakshi; Mikael Ciftan; Erich Gornik; Karl Unterrainer; Gottfried Strasser; C. Rauch
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Paper Abstract

We propose her a class of quantum well structures designed to achieve a coherent generation of THz radiation through a plasma instability. This can be achieved, without population inversion, if a dynamical inhomogeneity is built into the active region of the structure. We show, through self- consistent calculation of the non-equilibrium steady state, that such structures can be inherently unstable against growing charge fluctuations under a variety of conditions, including lack of population inversion. Preliminary calculations of the I-V characteristics of such structures are in good agreement with experimental results.

Paper Details

Date Published: 9 September 1999
PDF: 9 pages
Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); doi: 10.1117/12.361029
Show Author Affiliations
Krzysztof Kempa, Boston College (United States)
Pradip M. Bakshi, Boston College (United States)
Mikael Ciftan, Duke Univ. (United States)
Erich Gornik, Technische Univ. Wien (Austria)
Karl Unterrainer, Technische Univ. Wien (Austria)
Gottfried Strasser, Technische Univ. Wien (Austria)
C. Rauch, Technische Univ. Wien (Austria)

Published in SPIE Proceedings Vol. 3828:
Terahertz Spectroscopy and Applications II
J. Martyn Chamberlain, Editor(s)

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