کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
848223 909239 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spreading of apertured partially coherent beams in turbulent media
ترجمه فارسی عنوان
انتشار پرتوهای یکپارچه در رسانه های متلاطم
کلمات کلیدی
گسترش پرتوهای پرتو منسجم، آشفتگی، عرض متوسط ​​مربع
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی

The closed-form expression for the mean-squared width of apertured partially coherent beams propagating through turbulent media is derived by using the integral transform technique. The influence of turbulence on the spreading of apertured partially coherent beams is studied quantitatively by examining the relative mean-squared width, which is defined as the ratio of the mean-squared width of an apertured partially coherent beam in turbulence to the mean-squared width of the same beam in free space. On the other hand, the range of turbulence-independent propagation, also a reasonable measure of the resistance of a beam to turbulence, is obtained by examining the mean-squared width. It is shown that the spreading of apertured partially coherent beams is less affected by turbulence with smaller truncation parameter δ and coherence parameter α than with larger δ and α. In addition, the influence of turbulence on the spreading of apertured partially coherent beams increases first and then decreases due to increasing waist width w0. The results obtained are explained physically.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 125, Issue 20, October 2014, Pages 6032–6036
نویسندگان
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