分析斑点信标尺寸对深湍流条件下波前传感和闭环控制的影响

IF 2 4区物理与天体物理 Q3 OPTICS

Journal of Optics Pub Date : 2024-07-09 DOI:10.1088/2040-8986/ad5d04

Mikhail A Vorontsov, Svetlana L Lachinova, Ernst Polnau

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引用次数: 0

摘要

利用基于波光学的数值模拟分析了激光信标尺寸对理想相位共轭型自适应光学（AO）系统性能的影响。分析包括真空和分布式（体积）大气湍流中激光束传播的波前像差传感和闭环控制，信标光束从具有朗伯表面粗糙度的平面扩展目标上散射。为减轻目标引起的斑点效应对自动光学系统性能的影响，介绍并分析了斑点平均波前传感和控制方法。结果表明，所提出的斑点平均相位共轭控制算法能够在存在强斑点调制的情况下部分缓解湍流引起的像差。

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Analysis of speckle-beacon size impact on wavefront sensing and closed-loop control in deep turbulence conditions

The impact of the laser beacon size on the performance of an ideal phase-conjugation-type adaptive optics (AO) system is analyzed using wave-optics-based numerical simulation. The analysis includes wavefront aberration sensing and closed-loop control for laser beam propagation both in vacuum and in distributed (volume) atmospheric turbulence with the beacon beam scattering off a flat extended target with Lambertian surface roughness. For mitigation of the impact of target-induced speckle effects on the performance of AO systems, speckle-average wavefront sensing and control approaches are introduced and analyzed. The results demonstrate that proposed speckle-average phase conjugation control algorithms enable partial mitigation of turbulence-induced aberrations in presence of strong speckle modulations.

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来源期刊

Journal of Optics OPTICS-

CiteScore

4.50

自引率

4.80%

发文量

237

审稿时长

1.9 months

期刊介绍： Journal of Optics publishes new experimental and theoretical research across all areas of pure and applied optics, both modern and classical. Research areas are categorised as: Nanophotonics and plasmonics Metamaterials and structured photonic materials Quantum photonics Biophotonics Light-matter interactions Nonlinear and ultrafast optics Propagation, diffraction and scattering Optical communication Integrated optics Photovoltaics and energy harvesting We discourage incremental advances, purely numerical simulations without any validation, or research without a strong optics advance, e.g. computer algorithms applied to optical and imaging processes, equipment designs or material fabrication.