کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1541880 | 996697 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spatial coherence of an optical turbulent beam in a biased photorefractive crystal due to the spatiotemporal modulation instability
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spatial coherence of an optical turbulent beam in a biased photorefractive crystal due to the spatiotemporal modulation instability Spatial coherence of an optical turbulent beam in a biased photorefractive crystal due to the spatiotemporal modulation instability](/preview/png/1541880.png)
چکیده انگلیسی
We report the experimental observation of the dynamic pattern formation of a broad coherent light beam in a biased photorefractive crystal due to the spatiotemporal modulation instability. When the nonlinearity exceeds a specific threshold, the coherent light beam not only breaks up into light spots due to the modulation instability but also fast fluctuates both spatially and temporally, forming an optical turbulent beam, which behaves as a quasi-homogeneous speckled beam or a partially incoherent beam. We investigate the spatial coherence property of an optical turbulent beam from the visibility of the averaged double-slit interference fringe. We also numerically demonstrate the visibility variation of the instantaneous interference fringe of an optical turbulent beam.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 278, Issue 1, 1 October 2007, Pages 187-193
Journal: Optics Communications - Volume 278, Issue 1, 1 October 2007, Pages 187-193
نویسندگان
Fang-Wen Sheu, Ming-Feng Shih,