Spreading and direction of Gaussian-Schell model beam through a non-Kolmogorov turbulence.
Spreading and direction of Gaussian-Schell model beam through a non-Kolmogorov turbulence.
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DOI：
10.1364/ol.35.000715
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发表时间：
2010-03
期刊：
影响因子：
3.6
通讯作者：
Guohua Wu;Hong Guo;Song Yu;Bin Luo
中科院分区：
文献类型：
--
作者：
Guohua Wu;Hong Guo;Song Yu;Bin Luo
研究表明，部分相干高斯-谢尔模型（GSM）光束在非Kolmogorov大气湍流中的远场扩展和方向与光源的空间相干性无关，这在长距离自由空间光通信中具有潜在的应用价值。详细研究了空间相干性、指数值α、大气湍流的内尺度和外尺度对光束扩展的影响。GSM光束通过非Kolmogorov湍流大气时，内尺度越小，外尺度越大，光束的扩展越大。
We show that the far-field beam spreading and direction of partially coherent Gaussian-Schell model (GSM) beams are independent on the spatial coherence of the source through non-Kolmogorov atmospheric turbulence, which has potential applications in long-distance free-space optical communication. The effects of spatial coherence, exponent value alpha, and inner scale and outer scale of atmospheric turbulence on beam spreading are studied in details. The GSM beam has greater spreading for smaller inner scale or bigger outer scale through non-Kolmogorov turbulent atmosphere.