Share Email Print

Optical Engineering

Plasma excitations in a high electron mobility GaAs/AlGaAs heterostructure controlled by a visible light
Author(s): Marcin Białek; Jerzy Wróbel; Vladimir Umansky; Jerzy Łusakowski
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Terahertz (THz) detector based on a GaAs/AlGaAs heterostructure was investigated at low temperatures and high magnetic fields. The response of the detector showed a feature caused by a cyclotron resonance that was accompanied by several peaks originated from excitations of magnetoplasmons. Illumination with a visible light (VIS) caused an increase of a plasma concentration and resulted in a change of a magnetoplasmon spectrum. An analysis of spectra allowed to determine changes in the plasmon dispersion with a VIS, which gives a tool to tune the THz response of a plasmonic detector.

Paper Details

Date Published: 2 January 2015
PDF: 4 pages
Opt. Eng. 54(1) 017101 doi: 10.1117/1.OE.54.1.017101
Published in: Optical Engineering Volume 54, Issue 1
Show Author Affiliations
Marcin Białek, Univ. of Warsaw (Poland)
Jerzy Wróbel, Institute of Physics (Poland)
Univ. Rzeszowski (Poland)
Vladimir Umansky, Weizmann Institute of Science (Israel)
Jerzy Łusakowski, Univ. of Warsaw (Poland)

© SPIE. Terms of Use
Back to Top