Phase-shifting digital holography with a phase difference between orthogonal polarizations

Area of Science:

• Optics
• Holography
• Wavefront Sensing

Background:

• Digital holography is a key technique for wavefront reconstruction.
• Traditional phase-shifting methods require multiple recordings, increasing complexity and potential for error.
• Polarization-based approaches offer potential for simultaneous data acquisition.

Purpose of the Study:

• To propose and demonstrate a novel phase-shifting digital holography technique.
• To leverage orthogonal polarizations for simultaneous hologram recording.
• To enable efficient and accurate complex wavefront reconstruction.

Main Methods:

• Utilizing a phase difference between orthogonal polarizations to encode phase shifts.
• Simultaneously recording two phase-shifted holograms.
• Combining recorded holograms with reference and object wave distributions.
• Reconstructing the complex field of the object's wavefront.

Main Results:

• Successful simultaneous recording of two phase-shifted holograms was achieved.
• The complex wavefront field was successfully reconstructed.
• Preliminary experimental results validated the proposed method's efficacy.

Conclusions:

• The proposed phase-shifting digital holography technique using orthogonal polarizations is feasible.
• Simultaneous hologram recording enhances efficiency.
• This method provides a viable approach for accurate wavefront reconstruction.