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Lossy wavefront sensing and correction of distorted laser beams
Applied Optics
|April 1, 2020
Summary
This study introduces lossy wavefront sensing, a method that simplifies optical systems by reducing spatial sampling. It demonstrates effective laser beam correction with fewer samples, balancing performance for dynamic wavefront corrections.
Area of Science:
- Optics and Photonics
- Laser Beam Manipulation
- Adaptive Optics
Background:
- Laser beam distortions require sophisticated correction methods.
- Existing wavefront sensing approaches include sensor-based and sensor-less techniques.
- Machine learning offers new possibilities for wavefront reconstruction.
Purpose of the Study:
- To investigate the trade-offs between spatial and temporal sampling in wavefront sensing.
- To demonstrate the effectiveness of lossy wavefront sensing for dynamic wavefront correction.
- To simplify wavefront sensor design while maintaining correction performance.
Main Methods:
- Developed a fundamental study of lossy wavefront sensing.
- Reduced the number of effective spatial samples to match the actuator count of a deformable mirror.
- Evaluated the performance of dynamic wavefront corrections under reduced sampling.
Main Results:
- Lossy wavefront sensing simplifies wavefront sensor design.
- The method remains effective for laser beam correction.
- Achieved a balanced performance for dynamic wavefront corrections with reduced spatial samples.
Conclusions:
- Lossy wavefront sensing offers a simplified yet effective approach to laser beam correction.
- This technique provides flexibility in hardware choices for wavefront reconstruction.
- Applicable to free-space optical communication, lidar, and directed energy systems.
