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Rapid wavefront shaping using an optical gradient acquisition
Sagi Monin1, Marina Alterman1, Anat Levin2
1Department of Electrical and Computer Engineering, Technion, Haifa, Israel.
Nature Communications
|January 10, 2026
Summary
This study introduces a rapid wavefront shaping system using gradient descent for faster deep tissue imaging. It overcomes limitations of slow coordinate descent by enabling simultaneous updates of all modulation parameters.
Area of Science:
- Biomedical Optics
- Microscopy
- Optical Engineering
Background:
- Deep tissue imaging is hindered by scattering aberrations.
- Current wavefront shaping methods (coordinate descent) are slow and scale poorly with parameters.
- Estimating optimal modulation correction is difficult due to unknown tissue structures.
Purpose of the Study:
- To develop a rapid wavefront shaping system for efficient deep tissue imaging.
- To replace slow coordinate descent with a faster gradient descent optimization.
- To enable fast, high-resolution wavefront correction independent of parameter count.
Main Methods:
- Implemented a gradient descent optimization for wavefront shaping.
- Acquired a gradient vector for simultaneous update of all modulation parameters.
- Utilized a non-invasive, guide-star-free score function and analytically derived its gradient.
Main Results:
- Demonstrated a rapid wavefront shaping system overcoming coordinate descent limitations.
- Achieved wavefront correction with complexity independent of parameter count.
- Successfully corrected aberrations in a coherent confocal microscope.
Conclusions:
- The novel gradient descent approach enables faster and more efficient wavefront shaping.
- This system significantly improves deep tissue imaging capabilities.
- The method is effective for aberration correction in advanced microscopy techniques.
