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

被引：2

作者：

Vorontsov, Mikhail A. ^{[1
,2
]}

Lachinova, Svetlana L. ^{[3
]}

Polnau, Ernst ^{[1
]}

机构：

[1] Univ Dayton, Sch Engn, Electroopt & Photon Dept, 300 Coll Pk, Dayton, OH 45469 USA

[2] Optonica LLC, 2901 River End Ct, Spring Valley, OH 45370 USA

[3] Coherent Aerosp & Def Inc, 1300 Res Pk Dr, Beavercreek, OH 45432 USA

来源：

JOURNAL OF OPTICS | 2024年 / 26卷 / 08期

关键词：

laser beam propagation; atmospheric turbulence; wavefront sensing; adaptive optics; numerical simulations;

D O I：

10.1088/2040-8986/ad5d04

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页数：10