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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.

Keywords:

HoloTile computer generated holography laser material processing optical trapping point spread function volumetric additive manufacturing

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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.