Plasmon-based terahertz laser without population inversion

Krzysztof Kempa; Pradip M. Bakshi; Mikael Ciftan; Erich Gornik; Karl Unterrainer; Gottfried Strasser; C. Rauch

doi:10.1117/12.361029

9 September 1999 Plasmon-based terahertz laser without population inversion

Krzysztof Kempa, Pradip M. Bakshi, Mikael Ciftan, Erich Gornik, Karl Unterrainer, Gottfried Strasser, C. Rauch

Proceedings Volume 3828, Terahertz Spectroscopy and Applications II; (1999) https://doi.org/10.1117/12.361029
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

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.

Citation Download Citation

Krzysztof Kempa, Pradip M. Bakshi, Mikael Ciftan, Erich Gornik, Karl Unterrainer, Gottfried Strasser, and C. Rauch "Plasmon-based terahertz laser without population inversion", Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); https://doi.org/10.1117/12.361029

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