激光束从非理想表面反射时的空间噪声谱密度

IF 0.8 4区地球科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Radiophysics and Quantum Electronics Pub Date : 2024-04-01 DOI:10.1007/s11141-024-10308-9

E. A. Khazanov, A. A. Kochetkov, D. E. Silin

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引用次数: 0

摘要

我们在精密干涉测量的基础上，研究了石英板表面轮廓在 10 μm 至 100 mm 空间范围内不均匀性的光谱特性。获得了连接各向同性随机函数（如表面轮廓或激光束的空间相位分布）的一维和二维光谱密度的分析积分关系。结果表明，如果空间频率一定范围内的一维光谱密度以幂律方式下降，那么同一范围内的二维光谱密度也会以指数大于 1 的幂律方式下降。实验数据与理论数据十分吻合。

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Spectral Density of Spatial Noise of a Laser Beam Upon Reflection from a Non-Ideal Surface

We have studied the spectral properties of the inhomogeneities in the surface profile of a quartz plate in the spatial range from 10 μm to 100 mm on the basis of precision interferometric measurements. Analytical integral relations connecting one- and two-dimensional spectral densities of an isotropic random function, such as surface profile or spatial phase distribution of the laser beam, were obtained. It is shown that if the one-dimensional spectral density in a certain range of spatial frequencies decreases in a power-law manner, then the two-dimensional spectral density in the same range also decreases in a power-law manner with an exponent greater by one. The experimental data are in good agreement with the theoretical ones.

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来源期刊

Radiophysics and Quantum Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-PHYSICS, APPLIED

CiteScore

1.10

自引率

12.50%

发文量

审稿时长

6-12 weeks

期刊介绍： Radiophysics and Quantum Electronics contains the most recent and best Russian research on topics such as: Radio astronomy; Plasma astrophysics; Ionospheric, atmospheric and oceanic physics; Radiowave propagation; Quantum radiophysics; Pphysics of oscillations and waves; Physics of plasmas; Statistical radiophysics; Electrodynamics; Vacuum and plasma electronics; Acoustics; Solid-state electronics. Radiophysics and Quantum Electronics is a translation of the Russian journal Izvestiya VUZ. Radiofizika, published by the Radiophysical Research Institute and N.I. Lobachevsky State University at Nizhnii Novgorod, Russia. The Russian volume-year is published in English beginning in April. All articles are peer-reviewed.