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8 June 2012 Optimization of a mid-wave tunable polarimetric optical scatter instrument
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A tunable mid-wave infrared Mueller matrix scatterometer was recently developed. Initial design efforts were directed at using existing non-achromatic retarders and leveraging the flexibility of the measurement matrix method for dual rotating retarders. However, insufficient retardance existed among the non-achromatic retarders (~λ/5 at 4.35μm), resulting in high condition numbers and large errors in free-space Mueller matrix extractions. Condition number analysis and random error analysis was applied to the measurement matrix method and led to the selection of achromatic λ/3 retarders in the final design. This establishes a near-optimum configuration and the opportunity to develop and test measurement matrix method calibration techniques.
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Jason C. Vap, Stephen E. Nauyoks, and Michael A. Marciniak "Optimization of a mid-wave tunable polarimetric optical scatter instrument", Proc. SPIE 8364, Polarization: Measurement, Analysis, and Remote Sensing X, 836406 (8 June 2012);

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