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HoloTile light engine: new digital holographic modalities and applications
Jesper Glückstad1, Andreas Erik Gejl Madsen1
1SDU Centre for Photonics Engineering, University of Southern Denmark, Campusvej 55, Odense-M 5230, Denmark.
Reports on Progress in Physics. Physical Society (Great Britain)
|February 19, 2024
Summary
HoloTile technology reduces speckle noise in holographic systems by shaping output pixels. This patented approach enables high-resolution, clear holographic reconstructions for diverse applications.
Area of Science:
- Holography
- Optical Engineering
- Computational Imaging
Background:
- Speckle noise is a significant issue in Fourier holographic systems.
- This noise arises from overlapping point spread functions (PSFs) in the Fourier domain.
- Existing methods struggle to effectively mitigate this noise while maintaining high resolution.
Purpose of the Study:
- To introduce and validate HoloTile, a novel computer-generated holography approach.
- To demonstrate the reduction of speckle noise in holographic reconstructions.
- To present new modalities and applications of the HoloTile technique.
Main Methods:
- HoloTile combines tiling of phase-only sub-holograms with a PSF-shaping phase profile.
- This method shapes each frequency component to achieve non-overlapping profiles.
- Rapid generation of sub-holograms is employed for efficient processing.
Main Results:
- High-resolution, speckle-reduced holographic reconstructions were achieved.
- New HoloTile modalities with expanded PSF options and properties were presented.
- The effectiveness of HoloTile in mitigating speckle noise was demonstrated.
Conclusions:
- HoloTile offers a robust solution for reducing speckle noise in holographic systems.
- The technique enables high-quality reconstructions and opens new application possibilities.
- HoloTile is well-suited for applications like optical trapping, additive printing, and quantum communication.
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