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Single-shot fast phase diversity phase retrieval using a Lukosz modal-based synthetic hologram
Optics Letters
|March 14, 2025
Summary
A novel single-shot phase diversity phase retrieval (PDPR) method uses a synthetic computer-generated hologram (CGH) for high-fidelity image reconstruction. Holographic modal wavefront sensing (HMWFS) improves PDPR convergence and capture range.
Area of Science:
- Optical imaging and metrology
- Wavefront sensing and adaptive optics
- Computational holography
Background:
- Phase retrieval is crucial for reconstructing optical wavefronts.
- Aberrations limit imaging fidelity in optical systems.
- Existing methods often require multiple measurements or have limited capture ranges.
Purpose of the Study:
- To develop a single-shot phase retrieval method with enhanced performance.
- To improve the accuracy and robustness of wavefront sensing.
- To enable high-fidelity image reconstruction in the presence of aberrations.
Main Methods:
- A synthetic computer-generated hologram (CGH) was designed by synthesizing two phases.
- The CGH encodes low-order Lukosz aberration modes.
- Holographic modal wavefront sensing (HMWFS) provided initial phase estimation for PDPR.
Main Results:
- The synthetic CGH enabled multiple phase diversities for reconstruction.
- High-fidelity image reconstruction was achieved at the focal plane.
- HMWFS incorporation enhanced PDPR convergence speed and capture range.
Conclusions:
- The proposed single-shot PDPR method with HMWFS is effective for aberration correction.
- This approach offers improved performance over traditional phase retrieval techniques.
- It has potential applications in advanced optical imaging systems.
