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3 October 2022 Variable shearing holography with geometric phase elements
P. Shanmugam, A. Light, A. Turley, K. Falaggis
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Proceedings Volume 12223, Interferometry XXI; 122230M (2022) https://doi.org/10.1117/12.2634326
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States
Abstract
In this paper, we demonstrate the recording of shear interferograms using diffractive polarization gratings and reconstruct complex wavefields using a known optimization algorithm. We validate the reconstruction of a complex wavefield by recording the object wave at a defocused distance and numerically refocusing the reconstructed wavefield. Finally, we discuss the impact of the shear selection strategy and aperture selection using the information density function and demonstrate this by reconstructing complex wavefields using experimental data.
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P. Shanmugam, A. Light, A. Turley, and K. Falaggis "Variable shearing holography with geometric phase elements", Proc. SPIE 12223, Interferometry XXI, 122230M (3 October 2022); https://doi.org/10.1117/12.2634326
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KEYWORDS
Reconstruction algorithms
Holography
Diffraction gratings
Interferometry
Optimization (mathematics)
Phase shifting
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