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2Â¥»Ø¸´´íÎ󣬸üÕýÏ£º Accession number: 20161502223262 Title: Propagation properties of multi-Gaussian schell-model beams through oceanic turbulence Authors: Fu, Wenyu1 Email author qytcfwy@sina.com; Zhang, Hanmou1; Zheng, Xingrong1 Author affiliation: 1 Department of Physics, Long-Dong University, Qingyang; Gansu, China Source title: Zhongguo Jiguang/Chinese Journal of Lasers Abbreviated source title: Zhongguo Jiguang Volume: 42 Issue date: September 10, 2015 Publication year: 2015 Article number: s113002 Language: English ISSN: 02587025 CODEN: ZHJIDO Document type: Journal article (JA) Publisher: Science Press Abstract: Based on the model developed recently for describing a spatial power spectrum function of clear oceanic water and the extended Huygens-Fresnel integral in linear media, the effects of oceanic turbulence on propagation properties of a multi-Gaussian Schell-model (MGSM) beam is studied. The analytic expressions such as the spectral density, the degree of coherence and the propagation factor M2of the beam are derived. Numerical results show that, the oceanic turbulence has a significant influence on propagation properties of a MGSM beam. With the suitable choice of beam parameters, the center of the intensity profile not only forms a plateau in the far-field but also the formed plateau can keep a long distance in oceanic turbulence. Furthermore, a MGSM beam with a large source parameter N could further reduce turbulence-induced spreading effect. © 2016, Chinese Lasers Press. All right reserved. Number of references: 28 Page count: 10 Main heading: Gaussian beams Controlled terms: Coherent light - Gaussian distribution - Spectral density - Turbulence Uncontrolled terms: Degree of coherence - Gaussian Schell-model beams - Oceanic optics - Oceanic turbulence - Propagation factor Classification code: 711Electromagnetic Waves - 741.1Light/Optics - 922.1Probability Theory DOI: 10.3788/CJL201542.s113002 Database: Compendex Compilation and indexing terms, © 2016 Elsevier Inc. |
3Â¥2016-11-28 19:29:31
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zhanghanm156: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2016-11-30 10:06:28
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