Complex wave and phase retrieval from a single off-axis interferogram.

Area of Science:

• Optics and Photonics
• Image Processing
• Biomedical Imaging

Background:

• Single-frame off-axis holography offers potential for quantitative phase imaging.
• Reconstruction quality is often limited by noise, spectral overlap, and phase distortion.

Purpose of the Study:

• To develop an advanced iterative method for single-frame complex wave retrieval.
• To introduce a phase restoration algorithm that avoids phase unwrapping.
• To enhance accuracy, contrast, and robustness in holographic reconstruction.

Main Methods:

• Iterative complex wave retrieval using explicit object and reference wave models.
• Phase restoration algorithm independent of phase unwrapping.
• Validation through simulations and experimental data.

Main Results:

• Achieved higher accuracy and robustness in complex wave estimation and phase reconstruction compared to existing methods.
• Significantly improved the allowable bandwidth for object waves under realistic conditions.
• Demonstrated superior performance in quantitative phase imaging.

Conclusions:

• The proposed iterative method and phase restoration algorithm significantly advance single-frame holographic reconstruction.
• The technique is robust and accurate, overcoming limitations of current approaches.
• Offers potential for improved large field-of-view and high-resolution imaging applications.