Near-infrared active and selective polarization imaging by orthogonality-breaking: calibration of the acquisition chain

Jonathan Staes; François Parnet; Julien Fade; Noé Ortega-Quijano; Mehdi Alouini

doi:10.1117/12.2555880

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20 April 2020 Near-infrared active and selective polarization imaging by orthogonality-breaking: calibration of the acquisition chain

Jonathan Staes, François Parnet, Julien Fade, Noé Ortega-Quijano, Mehdi Alouini

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Proceedings Volume 11351, Unconventional Optical Imaging II; 113511E (2020) https://doi.org/10.1117/12.2555880
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

Active polarimetric imaging by orthogonality breaking is an alternative polarimetric imaging method developed at the Institut FOTON, Rennes. By illuminating a sample with a dual-frequency dual-polarization (DFDP) beam whose polarizations are orthogonal, it is possible to characterize its diattenuation and the orientation of the anisotropy in a single acquisition. However, this technique is not sensitive to other polarimetric effects such as birefringence or pure depolarization and requires a detection/demodulation chain that introduces non-linearity effects and does not allow results to be obtained quantitatively. In this paper, after a presentation of the orthogonality-break imaging system, we will detail the calibration/correction protocol which is now implemented to take into account the effects of non-linearities. Then, we will show that it is possible, by adding a polarimetric analysis module, to make this method sensitive to the main polarimetric effects. The results obtained on a simulated operational scene will be presented.

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Jonathan Staes, François Parnet, Julien Fade, Noé Ortega-Quijano, and Mehdi Alouini "Near-infrared active and selective polarization imaging by orthogonality-breaking: calibration of the acquisition chain", Proc. SPIE 11351, Unconventional Optical Imaging II, 113511E (20 April 2020); https://doi.org/10.1117/12.2555880

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