Shack-Hartmann wavefront sensor slope measurement algorithm robust to scintillation and sensor saturation.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-05-01 DOI:10.1364/OL.557864

Timothée Vene, Laurent M Mugnier, Aurélie Montmerle-Bonnefois, Jean-Marc Conan

引用次数: 0

Abstract

High throughput optical communication links require the use of adaptive optics (AO) to compensate for atmospheric turbulence even in strong perturbation conditions and at low elevation. Considering the intensity fluctuations brought by scintillation, we present a new slope measurement algorithm for the Shack-Hartmann wavefront sensor (SHWFS), based on a joint maximum likelihood approach. We show that this estimator is robust to sensor saturation and widens by more than two orders of magnitude the intensity range exploitable for reliable slope measurements compared to classical algorithms. Consequently, by increasing the intensity assigned to the wavefront sensor, we also increase the number of valid measurements despite sensor saturation.

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Shack-Hartmann波前传感器斜率测量算法对闪烁和传感器饱和具有鲁棒性。

高通量光通信链路需要使用自适应光学（AO）来补偿大气湍流，即使在强扰动条件下和在低海拔。考虑到闪烁带来的强度波动，提出了一种基于联合极大似然法的Shack-Hartmann波前传感器（SHWFS）斜率测量新算法。我们表明，该估计器对传感器饱和具有鲁棒性，并且与经典算法相比，可用于可靠坡度测量的强度范围扩大了两个数量级以上。因此，通过增加分配给波前传感器的强度，我们也增加了有效测量的数量，尽管传感器饱和。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.