Journal
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volume 248, Issue 4, Pages 863-866Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201000840
Keywords
extreme nonlinear optics; high harmonics; microscopic theory; terahertz excitations
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The extreme nonlinear terahertz response of initially unexcited intrinsic semiconductor nanostructures is studied theoretically by solving extended semiconductor Bloch equations numerically. The coupled dynamics of intraband acceleration and multiphoton interband transitions leads to high-harmonic generation up to several tens of the exciting terahertz frequency. It is shown that the actual cut-off frequency is determined by the band structure and not by the excitation strength. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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