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@ARTICLE{Chang:827147,
author = {Chang, Stefan and Dwyer, Christian and Barthel, Juri and
Boothroyd, Christopher Brian and Dunin-Borkowski, Rafal},
title = {{P}erformance of a direct detection camera for off-axis
electron holography},
journal = {Ultramicroscopy},
volume = {161},
issn = {0304-3991},
address = {Amsterdam},
publisher = {Elsevier Science},
reportid = {FZJ-2017-01345},
pages = {90 - 97},
year = {2016},
abstract = {The performance of a direct detection camera (DDC) is
evaluated in the context of off-axis electron holographic
experiments in a transmission electron microscope. Its
performance is also compared directly with that of a
conventional charge-coupled device (CCD) camera. The DDC
evaluated here can be operated either by the detection of
individual electron events (counting mode) or by the
effective integration of many such events during a given
exposure time (linear mode). It is demonstrated that the
improved modulation transfer functions and detective quantum
efficiencies of both modes of the DDC give rise to
significant benefits over the conventional CCD cameras,
specifically, a significant improvement in the visibility of
the holographic fringes and a reduction of the statistical
error in the phase of the reconstructed electron wave
function. The DDC's linear mode, which can handle higher
dose rates, allows optimisation of the dose rate to achieve
the best phase resolution for a wide variety of experimental
conditions. For suitable conditions, the counting mode can
potentially utilise a significantly lower dose to achieve a
phase resolution that is comparable to that achieved using
the linear mode. The use of multiple holograms and
correlation techniques to increase the total dose in
counting mode is also demonstrated.},
cin = {PGI-5 / ER-C-1 / ER-C-2},
ddc = {570},
cid = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209 /
I:(DE-Juel1)ER-C-2-20170209},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000367357500012},
doi = {10.1016/j.ultramic.2015.09.004},
url = {https://juser.fz-juelich.de/record/827147},
}