Snapshot imaging Mueller matrix instrument

Kudenov, Michael W.; Mallik, Sushmit; Escuti, Michael J.; Hagen, Nathan; Oka, Koichi; Dereniak, Eustace L.

doi:10.1117/12.2028546

Cited by 4 publications

(4 citation statements)

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“…Assuming the global vertical is ŷ ¼ ð0;1; 0Þ, then the local vertical polarization in the PSG and PSA coordinate systems, ŷi;loc and ŷo;loc , respectively, are calculated as E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 2 5 ; 1 1 6 ; 1 4 0 ŷi;loc ¼ R 3 ðr i ; θ i Þŷ and ŷo;loc ¼ R 3 ðr o ; θ o Þŷ: (25)…”

Section: Coordinate Systems Of Psg and Psamentioning

confidence: 99%

“…This motivates the development of snapshot polarimeters. Technologies for snapshot acquisition of MMs include encoding polarization to wavelength, 20 – 23 channeled polarimetry using polarization gratings, 24 , 25 structured illumination combined with a DoFP full Stokes camera, 26 and splitting the beam to enable multiple DoFP cameras 27 . Hybrid approaches also exist that use rotating retarders for illumination but decrease the number of acquisitions using a DoFP camera 28 …”

Section: Introductionmentioning

confidence: 99%

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Underdetermined polarimetric measurements for Mueller extrapolations

Jarecki

Kupinski

2022

Opt. Eng.

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Polarized light-matter interactions are mathematically described by the Mueller matrix (MM)-valued polarized bidirectional reflectance distribution function (pBRDF). A pBRDF is parameterized by 16 degrees of freedom that depend upon scattering geometry. A triple degenerate (TD) MM assumption reduces the degrees of freedom to eight: one for reflectance, six for non-depolarizing properties, and one for depolarization. When the nondepolarizing dominant process is known or assumed (e.g., Fresnel reflection), the degrees of freedom are further reduced to two. For a given material, if the TD model is appropriate and the dominant non-depolarizing process is known, then these two degrees of freedom can be estimated from as few as two polarimetric measurements. Thus, the MM can be extrapolated from a reduced number of measurements. The primary contribution of this work is the development and demonstration of a linear estimator for an MM's dominant eigenvalue (i.e., single depolarization parameter) that requires fewer measurements than a full MM reconstruction. MM extrapolations from single snapshot acquisitions with a Sony Triton 5.0MP polarization camera are performed at 30 acquisition geometries and two wavelengths on an ensemble of LEGO bricks treated to have varying surface roughness. These extrapolated MMs are compared with MMs reconstructed from a complete dual rotating retarder Mueller imaging polarimeter. The flux error mean and mode are 11.06% and 1.03%, respectively, despite a 10× reduction in the number of polarimetric measurements.

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Section: Coordinate Systems Of Psg and Psamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Underdetermined polarimetric measurements for Mueller extrapolations

Jarecki

Kupinski

2022

Opt. Eng.

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“…Later, Kudenov and Mallik et al . reported the effort towards experimental verification of this theory 15 . Our snapshot retinal imaging Mueller matrix polarimeter (SRIMMP) is based on the same principles.…”

Section: Optical and Opto-mechanical Designmentioning

confidence: 99%

“…In the work of Kudenov and Mallik et al . 15 , an inversion matrix-based calibration procedure was proposed due to the polarimeter’s complexity. However, when the system was calibrated as a singular Mueller matrix polarimeter, small wedge and tilt contained within the calibration elements created significant error in the polarimetric calibration.…”

Section: System Assembly and Mueller Matrix Reconstructionmentioning

confidence: 99%

Snapshot retinal imaging Mueller matrix polarimeter

et al. 2015

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Early diagnosis of glaucoma, which is a leading cause for visual impairment, is critical for successful treatment. It has been shown that Imaging polarimetry has advantages in early detection of structural changes in the retina. Here, we theoretically and experimentally present a snapshot Mueller Matrix Polarimeter fundus camera, which has the potential to record the polarization-altering characteristics of retina with a single snapshot. It is made by incorporating polarization gratings into a fundus camera design. Complete Mueller Matrix data sets can be obtained by analyzing the polarization fringes projected onto the image plane. In this paper, we describe the experimental implementation of the snapshot retinal imaging Mueller matrix polarimeter (SRIMMP), highlight issues related to calibration, and provide preliminary images acquired from the camera.

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