Object alignment in spatially multiplexed holograms applied to polarization sensing

The paper presents a new algorithm for object alignment in digital holography with multiple spherical reference waves. The algorithm was applied to polarization sensing with two orthogonally polarized reference waves. A novel holographic setup was built using a diffraction grating to generate two sy...

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Bibliographic Details
Published in:Review of scientific instruments 2024-07, Vol.95 (7)
Main Authors: Krajinić, Filip, Atanasijević, Petar, Mihailović, Peđa
Format: Article
Language:English
Subjects:
Algorithms
Alignment
Gratings (spectra)
Holography
Phase measurement
Polarization
Spherical waves
Wave diffraction
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Summary:The paper presents a new algorithm for object alignment in digital holography with multiple spherical reference waves. The algorithm was applied to polarization sensing with two orthogonally polarized reference waves. A novel holographic setup was built using a diffraction grating to generate two symmetric reference waves, keeping the setup simple and highly adjustable. The angles of rotation of the polarizing elements were calculated with mean absolute errors of 0.71° and 2.96° based on intensity and phase measurements, respectively. The same algorithm can be applied to any digital holographic measurement with multiple spherical reference waves.
ISSN:0034-6748
1089-7623
1089-7623
DOI:10.1063/5.0203429