Dynamic 3D Fresnel incoherent correlation holography imaging based on single-shot mirrored phase-shifting technology

Area of Science:

• Optics and Photonics
• 3D Imaging Technologies
• Holography

Background:

• Fresnel incoherent correlation holography (FINCH) enables wide-field 3D imaging with incoherent light.
• Traditional FINCH systems face challenges in dynamic imaging due to temporal phase-shifting methods.

Purpose of the Study:

• To introduce a compact, portable single-shot mirrored phase-shifting (SSPMS) module for FINCH.
• To enable simultaneous acquisition of four phase-shift holograms in a single exposure for dynamic 3D imaging.

Main Methods:

• Integration of the SSPMS module into the FINCH system.
• Utilizing a modified Michelson interferometer to create a laterally shifted mirrored beam.
• Secondary modulation of self-interference beams for hologram acquisition.

Main Results:

• Simultaneous acquisition of four phase-shift holograms in a single exposure.
• Elimination of optical aberrations and higher-order diffracted light noises.
• Successful experimental demonstration of dynamic 3D grayscale scene imaging.

Conclusions:

• The SSPMS module significantly enhances FINCH capabilities for dynamic 3D imaging.
• This method offers a robust and efficient approach compared to previous techniques.
• The developed module is easily integrated and portable for practical applications.