TITLE

Picosecond sampling with fiber-illuminated ErAs:GaAs photoconductive switches in a strong magnetic field and a cryogenic environment

AUTHOR(S)
Griebel, M.; Smet, J. H.; Kuhl, J.; von Klitzing, K.; Driscoll, D. C.; Kadow, C.; Gossard, A. C.
PUB. DATE
May 2003
SOURCE
Applied Physics Letters;5/12/2003, Vol. 82 Issue 19, p3179
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A sampling setup for a cryogenic environment has been developed using fiber-illuminated photoconductive switches fabricated from a material composed of equidistant layers of self-assembled ErAs nanoislands in a GaAs matrix. The setup includes dispersion compensation of the fibers and exhibits a time resolution better than 2.2 ps, which is insensitive to temperature and applied magnetic field and limited only by the properties of the coplanar waveguide circuitry. In cryogenic photocurrent autocorrelation measurements on single switches, a resolution exceeding 850 fs could be achieved.
ACCESSION #
9697762

 

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