Experimental demonstration of single-shot phase imaging with a coded aperture

Area of Science:

• Optics and Photonics
• Computational Imaging
• Digital Holography

Background:

• Traditional phase imaging often requires complex setups or suffers from limitations in field-of-view and resolution.
• Digital holography and coherent diffractive imaging offer distinct advantages but are typically used separately.
• Compressive sensing provides a framework for reconstructing signals from undersampled data.

Purpose of the Study:

• To experimentally demonstrate a novel single-shot phase imaging technique combining digital holography and compressive sensing.
• To leverage the strengths of both digital holography and coherent diffractive imaging in a single, simplified setup.
• To overcome limitations in field-of-view and spatial resolution inherent in conventional methods.

Main Methods:

• Development and implementation of a coded aperture system for single-shot phase imaging (SPICA).
• Integration of compressive sensing principles with digital holography and coherent diffractive imaging concepts.
• Experimental validation using a simplified optical setup without the need for reference light.

Main Results:

• Successful demonstration of single-shot phase imaging capabilities using the SPICA technique.
• Observation of complex fields with a simple, single-shot optical configuration.
• SPICA avoids field-of-view and spatial resolution losses typically associated with other methods.

Conclusions:

• SPICA offers a powerful new approach for single-shot phase imaging.
• The technique successfully merges the advantages of digital holography and compressive sensing.
• Experimental results highlight the promising potential of SPICA for advanced holographic imaging applications.