大气湍流中高阶高斯光束的非相干光束组合

Q3 Physics and Astronomy
Mukesh Kumar , Azeemuddin Syed , Arpit Khandelwal , Jagannath Nayak
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引用次数: 0

摘要

本文研究了穿过大气湍流的高阶高斯光束的非相干光束组合。推导出了高阶高斯光束(如赫米特高斯(HG)、拉盖尔高斯(LG)和贝塞尔高斯(BG))的组合强度和光斑大小的分析表达式。分析了这些高阶高斯光束在各种模式下的性能,包括光束漂移、抖动、孔视误差、Strehl 比和可见度的影响。一系列分析模拟显示了 19 个高阶组合光束的强度变化。对高阶高斯光束组合的各种模式的光斑大小、峰值和平均强度进行了比较。可以看出,在高阶高斯光束和低阶高斯光束的较高模式下,组合光束的光斑尺寸会迅速增大。我们评估了不同距离下的光束组合效率,注意到其随着模式阶数的增加而增加,并在 HG22 模式下达到最大值。此外,我们还探讨了高阶高斯波束组合在不同地面湍流条件下的性能。我们发现,HG22 和 LG22 等高阶模式与低阶模式相比,更容易受到强湍流的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Incoherent beam combination of higher-order Gaussian beam in atmospheric turbulence

In this article, an incoherent beam combination of higher-order Gaussian beams through atmospheric turbulence is studied. An analytical expression of the combined intensity and spot size of higher-order Gaussian beams such as Hermite Gaussian (HG), Laguerre Gaussian (LG), and Bessel Gaussian (BG) are derived. The performance of these higher-order Gaussian beams is analyzed in various modes including the effect of beam wander, jitter, bore-sight error, Strehl ratio, and Visibility. A series of analytical simulations shows the intensity variation of 19 higher-order combined beams. Spot size, peak, and average intensity comparisons are made between various modes of higher-order Gaussian beam combinations. It is seen that the spot size of the combined beam increases rapidly in a higher mode of HG and LG beam. We evaluate the efficiency of combining beams at different distances, noting that it increases with higher mode orders and reaches its maximum with the HG22 mode. Additionally, we explore the performance of higher-order Gaussian beam combinations under varying ground turbulence conditions. We observe that higher modes such as HG22 and LG22 are more susceptible to strong turbulence compared to lower modes.

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来源期刊
Results in Optics
Results in Optics Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
2.50
自引率
0.00%
发文量
115
审稿时长
71 days
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