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11 June 2024 Polarisation and wavefront sensing
Angela Dudley
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Proceedings Volume PC12991, Nanophotonics X; PC129910M (2024) https://doi.org/10.1117/12.3017659
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
We will demonstrate two methodologies for the retrieval of wavefront and polarization characteristics within optical fields. The first method offers a digital analog to Stokes polarimetry, requiring only four measurements, as opposed to the conventional six. Here we make use of a Polarization Grating (PG) together with a Digital Micro-mirror Device (DMD) to introduce a phase retardance between orthogonal polarization states to reconstruct both phase and polarization. The second approach leverages the concept of the transport-of-intensity, which capitalizes on the relationship between observed energy propagation in optical fields and their wavefront properties. To demonstrate the effectiveness of these techniques, we illustrate their application in spatially resolving exotic polarization structures, including metasurfaces, liquid crystal devices, and chiral materials.
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Angela Dudley "Polarisation and wavefront sensing", Proc. SPIE PC12991, Nanophotonics X, PC129910M (11 June 2024); https://doi.org/10.1117/12.3017659
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KEYWORDS
Polarization
Wavefront sensors
Wavefronts
LCDs
Micromirrors
Optical properties
Phase reconstruction
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