Characterization of holographically generated beams via phase retrieval based on Wigner distribution projections

Area of Science:

• Optics and Photonics
• Holography
• Beam Characterization

Background:

• Characterizing complex field amplitude in holographically generated beams is crucial for optical applications.
• Existing methods may lack the robustness and versatility needed for diverse beam types.

Purpose of the Study:

• To propose and validate a robust iterative algorithm for complex field amplitude characterization of paraxial beams.
• To assess the algorithm's performance with various beam symmetries (Laguerre-Gaussian, Hermite-Gaussian, spiral).
• To evaluate the quality of holographic recordings on photopolymerizable glass using the developed method.

Main Methods:

• Application of an iterative algorithm to recover beam phase from Wigner distribution projections.
• Experimental generation of beams using computer-generated holograms (CGH) on a spatial light modulator (SLM).
• Analysis of holographic recording quality on photopolymerizable glass.

Main Results:

• Successful characterization of the complex field amplitude for different beam types.
• Demonstration of the algorithm's effectiveness in recovering beam phase.
• Assessment of holographic recording quality, providing insights for data storage.

Conclusions:

• The proposed iterative approach offers a versatile and robust method for complex holographic beam characterization.
• This technique facilitates the creation of adaptive CGHs and enhances quality control in holographic data storage.