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@article{Berk:2021:10.1103/PhysRevResearch.3.033111,
author = {Berk, J and Foreman, MR},
doi = {10.1103/PhysRevResearch.3.033111},
journal = {Physical Review Research},
pages = {1--14},
title = {Role of multiple scattering in single particle perturbations in absorbing random media},
url = {http://dx.doi.org/10.1103/PhysRevResearch.3.033111},
volume = {3},
year = {2021}
}
TY - JOUR
AB - Speckle patterns produced by disordered scattering systems exhibit asensitivity to addition of individual particles which can be used for sensingapplications. Using a coupled dipole model we investigate how multiplescattering can enhance field perturbations arising in such random scatteringbased sensors. Three distinct families of multiple scattering paths are shownto contribute and the corresponding complex enhancement factors derived.Probability distributions of individual enhancement factors over the complexplane are characterised numerically within the context of surface plasmonpolariton scattering in which absorption is shown to play an important role. Weshow that enhancements become more strongly dependent on individual scattererproperties when absorption losses are larger, however, amplitude enhancements$\sim 10^2$, comparable to low loss surface plasmons, are achievable throughsensor optimisation. Approximate analytic expressions for the complex meanenhancements are also found, which agree well with simulations when loopcontributions are negligible.
AU - Berk,J
AU - Foreman,MR
DO - 10.1103/PhysRevResearch.3.033111
EP - 14
PY - 2021///
SN - 2643-1564
SP - 1
TI - Role of multiple scattering in single particle perturbations in absorbing random media
T2 - Physical Review Research
UR - http://dx.doi.org/10.1103/PhysRevResearch.3.033111
UR - http://arxiv.org/abs/2105.02800v2
UR - https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.033111
UR - http://hdl.handle.net/10044/1/90878
VL - 3
ER -