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@ARTICLE{Scheidt:1034246,
author = {Scheidt, Dennis and Quinto-Su, Pedro A},
title = {{E}rrors in single pixel laser imaging emerging from
spatial size limits in the bucket detector},
journal = {Journal of optics},
volume = {27},
number = {1},
issn = {2040-8978},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2024-07035},
pages = {015605 -},
year = {2025},
abstract = {In single pixel imaging (SPI) an image is sampled with an
orthogonal basis projected by a programmable optical element
like a digital micromirror array or a spatial light
modulator. The reflected or diffracted light is collected by
a lens and measured with a photodiode or bucket detector. In
this work we demonstrate that SPI of laser light fields can
exhibit cross talk with its phase when the bucket detector
is not sufficiently large (i.e. fast photodiodes) and does
not integrate the full spectrum of each basis element. In
that regime, structured phases can emerge from errors in the
optical or light collection system (i.e. misaligned optical
elements or aberrations) and can appear in the reconstructed
amplitude image. We show this behavior in simulations and
experiments where the reconstructed amplitude image will
exhibit phase cross-talk if the detector size is smaller
than between $50\%$ and $75\%$ of the maximum area spanned
by the projected spectrum of the measurement basis. This is
important because photodiodes with a fast response time have
a small effective area.},
cin = {INM-1},
ddc = {530},
cid = {I:(DE-Juel1)INM-1-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525)},
pid = {G:(DE-HGF)POF4-5251},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001377002700001},
doi = {10.1088/2040-8986/ad9844},
url = {https://juser.fz-juelich.de/record/1034246},
}