激光束的随机空间噪声对影响超过阈值的概率的影响

IF 1.8 4区物理与天体物理 Q3 OPTICS

Journal of The Optical Society of America B-optical Physics Pub Date : 2023-10-12 DOI:10.1364/josab.497901

Anton Kochetkov, Ekaterina Kocharovskaya, Efim Khazanov

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引用次数: 2

摘要

导出了二维随机函数(例如，带噪声的激光束的影响)在给定区域上超过阈值的概率的解析表达式。概率完全由两个参数决定。第一个是波束面积与平方秒归一化谱矩的乘积，具有噪声模式的等效数的含义，仅由噪声的谱特性决定。相反，第二个参数不依赖于噪声谱;它仅由标准偏差与影响力阈值和平均值之差的比值决定。数值模拟结果与理论结果吻合较好。结果被推广到几个有实际意义的案例。

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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Impact of random spatial noise of a laser beam on the probability of fluence to exceed the threshold value

The analytical expressions of the probability for a two-dimensional random function (for example, fluence of a laser beam with noise) to exceed the threshold value over a given area have been derived. The probability is fully determined only by two parameters. The first one, the product of the beam area and the squared second normalized spectral moment, has the meaning of the equivalent number of noise modes and is determined only by the spectral properties of the noise. The second parameter, on the contrary, does not depend on the noise spectrum; it is determined only by the ratio of the standard deviation to the difference between the threshold and mean values of fluence. The numerical simulations are in a good agreement with the theory. The results are generalized to several cases of practical interest.

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来源期刊

Journal of The Optical Society of America B-optical Physics 物理-光学

CiteScore

4.00

自引率

5.30%

发文量

374

审稿时长

2.1 months

期刊介绍： The Journal of the Optical Society of America B (JOSA B) is a general optics research journal that complements JOSA A. It emphasizes scientific research on the fundamentals of the interaction of light with matter such as quantum optics, nonlinear optics, and laser physics. Topics include: Advanced Instrumentation and Measurements Fiber Optics and Fiber Lasers Lasers and Other Light Sources from THz to XUV Light-Induced Phenomena Nonlinear and High Field Optics Optical Materials Optics Modes and Structured Light Optomechanics Metamaterials Nanomaterials Photonics and Semiconductor Optics Physical Optics Plasmonics Quantum Optics and Entanglement Quantum Key Distribution Spectroscopy and Atomic or Molecular Optics Superresolution and Advanced Imaging Surface Optics Ultrafast Optical Phenomena Wave Guiding and Optical Confinement JOSA B considers original research articles, feature issue contributions, invited reviews and tutorials, and comments on published articles.