Ultrafast detection and autocorrelation of picosecond THz radiation pulses with a GaAs/AlAs superlattice

TitleUltrafast detection and autocorrelation of picosecond THz radiation pulses with a GaAs/AlAs superlattice
Publication TypeJournal Article
Year of Publication1998
AuthorsS. Winnerl, W. Seiwerth, E. Schomburg, J. Grenzer, K.F Renk, C Langerak, A.FG van der Meer, D.G Pavel'ev, Y. Koschurinov, A.A Ignatov
JournalApplied Physics Letters
Volume73
Number20
Pagination2983-2985
Date PublishedNov 16
ISBN Number0003-6951
Abstract

We used a wide miniband GaAs/AlAs superlattice (at room temperature) for detection and autocorrelation of picosecond THz radiation pulses (frequency 4.3 THz) from a free- electron laser. The detection was based on a THz-field induced change in conductivity of the superlattice, and the correlation on the nonlinearity of the conductivity change at strong THz-pulse- power. The nonlinear conductivity change was due to two effects, which we attribute to dynamical localization of miniband electrons and to ionization of deep impurity centers. (C) 1998 American Institute of Physics. [S0003-6951(98)04946-8].

DOI10.1063/1.122651
PID

ced4e237936c59faf673df40a3d9fd34

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