Spatial incoherence-driven optical reconstruction of holograms with observer shift-invariance

Area of Science:

• Computational optics
• Photonics
• Holography

Background:

• Holography traditionally requires partially coherent light for optical reconstruction.
• Computational methods have enabled holographic data acquisition with incoherent light, but optical reconstruction remains a challenge.

Purpose of the Study:

• To demonstrate a hologram capable of reconstructing 3D distributions using incoherent light.
• To overcome the limitations of coherent light sources in optical holographic reconstruction.

Main Methods:

• Decomposing incoherent light into infinitesimal coherent components.
• Calculating the propagation of these components and optimizing their incoherent sum.
• Utilizing a neural network for real-time synthesis of incoherent holograms.

Main Results:

• Successful reconstruction of 3D distributions using incoherent light.
• Achieved high image quality and a significantly expanded eyebox (1000-fold) due to shift-invariance.
• Demonstrated real-time synthesis, drastically reducing computational costs.

Conclusions:

• Incoherent light can be effectively utilized for optical holographic reconstruction.
• The developed method offers superior image quality and a vastly improved user experience through an expanded eyebox.
• This approach holds potential for advancing holographic displays and other photonic applications.