Title: Terahertz harmonic generation in miniband semiconductor superlattices

Authors: Chang Wang, Jun Cheng Cao

Addresses: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences and Graduate School of Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, PR China. ' State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences and Graduate School of Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, PR China

Abstract: We have numerically calculated the time-dependent response of a miniband semiconductor superlattice under an intense terahertz electric field, using the balance equation approach. The harmonics of the average electron velocity are carefully studied with the change of the static electric field, while fixing the amplitude and the frequency of the terahertz field. The numerical results indicate that the resonant peaks show up at the static electric field corresponding to the Bloch oscillation frequency ω_Β = mω. The calculated power of second harmonics as a function of static electric field is in good agreement with the experimental results.

Keywords: miniband semiconductor superlattices; balance equation; average electron velocity; terahertz harmonic generation; harmonics; nanotechnology; nanoscale technology.

DOI: 10.1504/IJCSE.2006.012772

International Journal of Computational Science and Engineering, 2006 Vol.2 No.3/4, pp.192 - 195

Published online: 14 Mar 2007 *

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