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Current suppression and harmonic generation by intense terahertz fields in semiconductor superlattices

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1 Author(s)
Lei, X.L. ; China Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing 100080, ChinaState Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China

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The time-dependent current response of superlattice miniband conduction to a strong submillimeter wave electric field of varying frequency and strength is investigated at lattice temperature T=77 and 300 K by means of the three-dimensional balance-equation method with accurate microscopic treatment of impurity and phonon scatterings. The terahertz-radiation-induced current suppression and the generated third harmonic power as functions of the input power of the high-frequency field predicted theoretically are in reasonable agreement with recent experimental findings in heavily doped GaAs superlattices. © 1997 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:82 ,  Issue: 2 )