近日，英国牛津大学Chao He团队研究了强度自适应光学。2025年3月19日出版的《光：科学与应用》杂志发表了这项成果。

自适应光学（AO）是从航空航天到显微镜等各个研究领域中使用的强大工具。传统上，AO专注于校正光学相位像差，最近的进展扩展到偏振补偿。然而，强度误差在光学系统中也很普遍，但有效的校正方法仍处于起步阶段。

研究组介绍了一种新的AO方法，称为强度自适应光学（I-AO），它采用双反馈回路机制，首先解决不均匀的强度分布问题，随后补偿光瞳平面的能量损失。他们证明了I-AO可以在基于传感器和无传感器的格式下运行，并通过定量分析畸变系统的聚焦质量来验证其可行性。这项技术扩展了AO工具包，为下一代AO技术铺平了道路。

附：英文原文

Title: Intensity adaptive optics

Author: Zhao, Zimo, Ma, Yifei, Song, Zipei, Antonello, Jacopo, Cui, Jiahe, Chen, Binguo, Wang, Jingyu, Sun, Bangshan, He, Honghui, Luo, Lin, Fells, Julian A. J., Elston, Steve J., Booth, Martin J., Morris, Stephen M., He, Chao

Issue&Volume: 2025-03-19

Abstract: Adaptive optics (AO) is a powerful tool employed across various research fields, from aerospace to microscopy. Traditionally, AO has focused on correcting optical phase aberrations, with recent advances extending to polarisation compensation. However, intensity errors are also prevalent in optical systems, yet effective correction methods are still in their infancy. Here, we introduce a novel AO approach, termed intensity adaptive optics (I-AO), which employs a dual-feedback loop mechanism to first address non-uniform intensity distribution and subsequently compensate for energy loss at the pupil plane. We demonstrate that I-AO can operate in both sensor-based and sensorless formats and validate its feasibility by quantitatively analysing the focus quality of an aberrated system. This technique expands the AO toolkit, paving the way for next-generation AO technology.

DOI: 10.1038/s41377-025-01779-0

Source: https://www.nature.com/articles/s41377-025-01779-0