کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7845805 | 1508597 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Average intensity and spreading of a radially polarized multi-Gaussian Schell-model beam in anisotropic turbulence
ترجمه فارسی عنوان
متوسط شدت و گسترش یک پرتو مدل چندگاوس شعاعی قطبی در آشفتگی آنی استروپیک
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
طیف سنجی
چکیده انگلیسی
Analytical expressions of average intensity and long-term beam width for a radially polarized multi-Gaussian Schell-model (MGSM) beam in anisotropic atmospheric turbulence are developed based on the extended Huygens-Fresnel principle. The influences of anisotropic non-Kolmogorov turbulence and source parameters on the average intensity, polarization and long-term beam spreading of radially polarized MGSM beam are examined in detail. The source correlations, free-space diffraction and turbulent effect jointly affect both the intensity and polarization profiles of the beam propagated in the atmosphere. As a radially polarized MGSM beam propagates in the atmosphere, increasing the associated beam order can lower the evolution rate from its flat-topped beam profile into a Gaussian beam profile because of the turbulent effect. Variations in the average intensity and long-term beam width are closely related to the propagation distance, power spectrum index, inner-scale, initial spatial coherence, and beam width. The atmospheric turbulence-induced beam spreading is generally suppressed with the enhanced anisotropy coefficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 218, October 2018, Pages 12-20
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 218, October 2018, Pages 12-20
نویسندگان
Mingjian Cheng, Lixin Guo, Jiangting Li, Xu Yan, Kangjun Dong, Yang You,