Performance of a four-channel polarimeter with very-low-light-level detection

Details Performance of a four-channel polarimeter with very-low-light-level detection Performance of a four-channel polarimeter with very-low-light-level detection

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3498..446g&link_type=abstract

Proc. SPIE Vol. 3498, p. 446-457, Sensors, Systems, and Next-Generation Satellites II, Hiroyuki Fujisada; Ed.

Computer Science

Performance

Scientific paper

We examine the low light level performance of a four-channel polarimeter with a single photon counting sensor associated with each channel. Specifically, we investigate how the detection noise propagates through the polarimeter calibration matrix and influences the estimation of I(subscript 1) and I(subscript 2), the intensities in two orthogonal polarization states and, (delta) , the phase delay between the two orthogonal states. The error in estimating the phase delay is first derived in the small angle approximation for low light levels. The approximation is removed by deriving a general formalism valid for arbitrary light levels including very low light levels. A specific polarimeter design is examined and quantitative examples are shown and discussed for that polarimeter.

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