Optimizing probes for multi-beam ptychography
Optics Express
|May 4, 2026
Summary
Multi-beam ptychography (MBP) can be improved using structured probes. Hadamard-based phase masks offer superior robustness and scalability for high-throughput imaging applications.
Area of Science:
- Coherent X-ray imaging
- Advanced microscopy techniques
Background:
- Multi-beam ptychography (MBP) enhances imaging throughput by using multiple simultaneous beams.
- Increased beam numbers complicate ptychographical reconstructions, reducing robustness.
Purpose of the Study:
- To develop a quantitative framework for assessing probe sets in MBP.
- To identify optimal probe designs for robust and scalable MBP.
Main Methods:
- Developed a framework evaluating probe separability, uniformity, and fabrication feasibility.
- Compared Hadamard-based phase masks, Zernike polynomials, phase plates, and spiral phase masks.
- Assessed performance across varying scan densities in MBP.
Main Results:
- Hadamard-based phase masks consistently outperformed other tested probes in MBP.
- Spiral phase masks offered comparable resolution but scaled less efficiently.
- Established practical criteria for structured probe design and evaluation.
Conclusions:
- Hadamard masks are superior for robust and scalable MBP.
- The developed framework aids in designing effective structured probes.
- Enables more efficient high-throughput coherent imaging.
