Abstract
We have observed resonant changes in the current-voltage characteristics of miniband semiconductor superlattices when the Bloch frequency is resonant with a terahertz field and its harmonics. This corresponds to absorption and gain of THz radiation in the Wannier Stark ladder of the superlattice. The resonant feature consists of a peak in the current which grows with increasing laser intensity accompanied by a decrease of the current at the low bias side. When the intensity is increased further the first peak starts to decrease and a second peak at about twice the voltage of the first peak is observed due to a two-photon resonance. At the highest intensities we observe up to a four-photon resonance.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
L. Esaki, R. Tsu, IBM J. Res. Dev. 14, 61 (1970).
C. Wascke, H.G. Roskos, R. Schwedler, K. Leo, H. Kurz, PRL 70, 3319 (1993).
V.V. Pavlovich, E.M. Epshtein, Sov. Phys. Semicond. 10, 1196 (1976).
A.A. Ignatov, K.F. Renk, E.P. Dodin, PRL 70, 1996 (1993).
M. Holthaus, PRL 69, 351 (1992).
G. Bastard, R. Ferreira, CR. Acad. Sci. 312, 971 (1991).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 Plenum Press, New York
About this chapter
Cite this chapter
Unterrainer, K. et al. (1996). Strong Terahertz-Photocurrent Resonances in Miniband Superlattices at the Bloch Frequency. In: Hess, K., Leburton, JP., Ravaioli, U. (eds) Hot Carriers in Semiconductors. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0401-2_32
Download citation
DOI: https://doi.org/10.1007/978-1-4613-0401-2_32
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-8035-1
Online ISBN: 978-1-4613-0401-2
eBook Packages: Springer Book Archive