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Proceedings Paper

Visible-light controlled plasma excitations in high electron mobility GaAs/AlGaAs heterostructure
Author(s): M. Białek; M. Marcinkiewicz; T. Tarkowski; J. Wróbel; V. Umansky; B. Piętka; J. Łusakowski
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Paper Abstract

Terahertz detectors based on GaAs/AlGaAs heterostructure were investigated at low temperatures and high magnetic fields. A response of detectors showed a line caused by a cyclotron resonance transition which was accompanied by several peaks originated form excitation of magnetopasmons. Illumination with a visible light caused an increase of the plasma concentration and resulted in a change of the magnetoplasmon spectrum. An analysis of spectra allowed to determine changes in the plasmon dispersion relation with a visible light which gives a tool to tune a THz response of a plasmonic detector.

Paper Details

Date Published: 5 September 2014
PDF: 4 pages
Proc. SPIE 9199, Terahertz Emitters, Receivers, and Applications V, 91990Z (5 September 2014); doi: 10.1117/12.2061320
Show Author Affiliations
M. Białek, Univ. of Warsaw (Poland)
M. Marcinkiewicz, Univ. of Warsaw (Poland)
T. Tarkowski, Univ. of Warsaw (Poland)
J. Wróbel, Institute of Physics (Poland)
Univ. of Rzeszow (Poland)
V. Umansky, Weizmann Institute of Science (Israel)
B. Piętka, Univ. of Warsaw (Poland)
J. Łusakowski, Univ. of Warsaw (Poland)

Published in SPIE Proceedings Vol. 9199:
Terahertz Emitters, Receivers, and Applications V
Manijeh Razeghi; Alexei N. Baranov; John M. Zavada; Dimitris Pavlidis, Editor(s)

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