Quantitative Analysis of Improvement on Wavefront Aberration Correction with Scattering Preconditioner

Many works effectively improved the aberration correction accuracy by adaptive optics (AO) with a defocus preconditioner, which has been quantitatively demonstrated and the formula of the optimal defocus distance were derived. However, no work has yet quantitatively analyzed the improvement with a scattering preconditioner. Spurred by the gap, we equivalently convert the change of the optical field at the imaging sensor due to scattering to the additional phase on the pupil plane, then derive the model between the scattering screen roughness with the probability of dual wavefront (PDWF) and the proportion of intensity in the cropped area (PICA), respectively. The experimental results show that the correction accuracy is significantly improved as PDWF decreases, and deteriorated after PICA less than 95%, which is consistent with the conclusion under the defocus preconditioner. Furthermore, we propose theoretical guidance on how to select the scattering screen roughness based on the AO parameters to meet the requirements of high accuracy and real-time performance.