TY  - JOUR
AU  - Trost, Fabian
AU  - Ayyer, Kartik
AU  - Chapman, Henry N.
TI  - Photon statistics and signal to noise ratio for incoherent diffraction imaging
JO  - New journal of physics
VL  - 22
SN  - 1367-2630
CY  - [London]
PB  - IOP
M1  - PUBDB-2020-02867
SP  - 083070
PY  - 2020
AB  - Intensity interferometry is a well known method in astronomy. Recently, a related method called incoherent diffractive imaging (IDI) was proposed to apply intensity correlations of x-ray fluorescence radiation to determine the 3D arrangement of the emitting atoms in a sample. Here we discuss inherent sources of noise affecting IDI and derive a model to estimate the dependence of the signal to noise ratio (SNR) on the photon counts per pixel, the temporal coherence (or number of modes), and the shape of the imaged object. Simulations in two- and three-dimensions have been performed to validate the predictions of the model. We find that contrary to coherent imaging methods, higher intensities and higher detected counts do not always correspond to a larger SNR. Also, larger and more complex objects generally yield a poorer SNR despite the higher measured counts. The framework developed here should be a valuable guide to future experimental design.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000565707000001
DO  - DOI:10.1088/1367-2630/aba85c
UR  - https://bib-pubdb1.desy.de/record/442083
ER  -