Characteristics of a partially coherent Gaussian Schell-model beam propagating in slanted atmospheric turbulence

doi:10.1088/1674-1056/21/5/054203

中国物理B ›› 2012, Vol. 21 ›› Issue (5): 54203-054203.doi: 10.1088/1674-1056/21/5/054203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Characteristics of a partially coherent Gaussian Schell-model beam propagating in slanted atmospheric turbulence

李亚清,吴振森

School of Science,Xidian University, Xi'an 710071, China

收稿日期:2011-05-05 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61172031).

Characteristics of a partially coherent Gaussian Schell-model beam propagating in slanted atmospheric turbulence

Li Ya-Qing(李亚清)^† and Wu Zhen-Sen(吴振森)^‡

School of Science,Xidian University, Xi'an 710071, China

Received:2011-05-05 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61172031).

摘要/Abstract

摘要： On the basis of the extended Huygens--Fresnel principle and the model of the refractive-index structure constant in the atmospheric turbulence proposed by the International Telecommunication Union-Radio Communication Sector, the characteristics of the partially coherent Gaussian Schell-model (GSM) beams propagating in slanted atmospheric turbulence are studied. Using the cross-spectral density function (CSDF), we derive the expressions for the effective beam radius, the spreading angle, and the average intensity. The variance of the angle-of-arrival fluctuation and the wander effect of the GSM beam in the turbulence are calculated numerically. The influences of the coherence degree, the propagation distance, the propagation height, and the waist radius on the propagation characteristics of the partially coherent beams are discussed and compared with those of the fully coherent Gaussian beams.

关键词: atmospheric turbulence, partially coherent beam, propagation in a slanted path

Abstract: On the basis of the extended Huygens--Fresnel principle and the model of the refractive-index structure constant in the atmospheric turbulence proposed by the International Telecommunication Union-Radio Communication Sector, the characteristics of the partially coherent Gaussian Schell-model (GSM) beams propagating in slanted atmospheric turbulence are studied. Using the cross-spectral density function (CSDF), we derive the expressions for the effective beam radius, the spreading angle, and the average intensity. The variance of the angle-of-arrival fluctuation and the wander effect of the GSM beam in the turbulence are calculated numerically. The influences of the coherence degree, the propagation distance, the propagation height, and the waist radius on the propagation characteristics of the partially coherent beams are discussed and compared with those of the fully coherent Gaussian beams.

Key words: atmospheric turbulence, partially coherent beam, propagation in a slanted path

中图分类号: (Wave propagation in random media)

42.25.Dd

42.25.Kb (Coherence) 42.68.Bz (Atmospheric turbulence effects)

李亚清,吴振森. Characteristics of a partially coherent Gaussian Schell-model beam propagating in slanted atmospheric turbulence[J]. 中国物理B, 2012, 21(5): 54203-054203.

Li Ya-Qing(李亚清) and Wu Zhen-Sen(吴振森) . Characteristics of a partially coherent Gaussian Schell-model beam propagating in slanted atmospheric turbulence[J]. Chin. Phys. B, 2012, 21(5): 54203-054203.

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Characteristics of a partially coherent Gaussian Schell-model beam propagating in slanted atmospheric turbulence

Characteristics of a partially coherent Gaussian Schell-model beam propagating in slanted atmospheric turbulence

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