Optimizing Mueller
Polarimetry in Noisy
Systems Through
Over-determination
Posted on 2021-10-20 - 15:20
Mueller polarimetry measurements
are increasingly being used to image highly
dynamic and short-lived phenomena such as
plasma discharges. For phenomena such as
this, exposure times below 1𝜇s must be used.
Unfortunately, these low exposure times significantly
reduce the signal-to-noise ratio, making
accurate and consistent measurements difficult.
To overcome this limitation, we investigated increasing
the number of Stokes vectors produced
from the Polarisation State Analyser and Polarisation
State Generator, a process known as
over-determination. To conduct our analysis we
used results from physical experiments using
Stokes vectors generated by liquid crystal variable
retarders. These results were then verified
using data from simulations. First we conclude
that increasing the degree of over-determination
is a simple and effective way of dealing with
this noise, however we also convey that choosing
the best scheme is not an entirely trivial
process. Secondly, we demonstrate that overdetermination
gives rise to hitherto inaccessible
information that allows for the quantification of
statistical noise and crucially, the pinpointing
of the origin of systematic noise, a highly beneficial
process that has been lacking until now.
CITE THIS COLLECTION
Philpott, Harry; Garcia-Caurel, Enrique; Guaitella, Olivier; Sobota, Ana (2021). Optimizing Mueller
Polarimetry in Noisy
Systems Through
Over-determination. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.5610995.v1
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AUTHORS (4)
HP
Harry Philpott
EG
Enrique Garcia-Caurel
OG
Olivier Guaitella
AS
Ana Sobota