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Proceedings Paper

Theory of THz harmonic generation in semiconductor superlattices (Conference Presentation)
Author(s): Mauro F. Pereira; David O. Winge; Andreas Wacker
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Paper Abstract

Superlattices are artificial structures with a wide range of applications and open possibilities for controlling and study transport and optical [M.F. Pereira Jr., Phys. Rev. B 52, (1995)] properties of semiconductors. In this work, we start from the full Nonequilibrium Greens Functions approach [A. Wacker et a, IEEE Journal of Sel. Top. in Quantum Electron.,19 1200611, (2013),T. Schmielau and M.F. Pereira, Appl. Phys. Lett. 95 231111, (2009)] to obtain Voltage-Current curves and compare them with experiments. By adjusting the numerical solutions of the corresponding Dyson equations to a simple model, analytical solutions are given for the nonlinear response of a biased superlattice under sub-THz radiation. The frequency multiplication process leading to multiple harmonicgeneration is described. This hybrid approach leads to predictive simulations and may have important application for a new generation of devices where the superlattices are used as both sources and detectors and may be particular useful for high resolution transient spectroscopy [A.A. Yablokov et at, IEEE Transactions on THz Science and Technology 5, 845 (2015)].

Paper Details

Date Published: 3 November 2016
PDF: 1 pages
Proc. SPIE 9934, Terahertz Emitters, Receivers, and Applications VII, 993403 (3 November 2016); doi: 10.1117/12.2238615
Show Author Affiliations
Mauro F. Pereira, Sheffield Hallam Univ. (United Kingdom)
David O. Winge, Lund Univ. (Sweden)
Andreas Wacker, Lund Univ. (Sweden)

Published in SPIE Proceedings Vol. 9934:
Terahertz Emitters, Receivers, and Applications VII
Manijeh Razeghi; Alexei N. Baranov; John M. Zavada; Dimitris Pavlidis, Editor(s)

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