کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1539736 996644 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A neat semi-Gaussian laser beam with no diffraction fringes: Theoretical analysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
A neat semi-Gaussian laser beam with no diffraction fringes: Theoretical analysis
چکیده انگلیسی

We propose a simple optical device to convert a Gaussian laser beam into a neat semi-Gaussian laser beam without any diffraction fringe by using a spatial light modulator and a thin, sharp blade, and numerically calculate the diffracted, relative intensity distributions of both the semi-Gaussian laser field and the semi-Gaussian, pseudo-thermal light. We also study the dependence of the border width of the semi-Gaussian beam on the waist of the Gaussian beam. Our study shows that the proposed scheme can be used to cancel all diffraction fringes from both the straight edge of the blade and a finite lens aperture in all the planes vertical to the z axis and obtain a neat semi-Gaussian beam without any diffraction fringe, and find that the border width wB of the generated semi-Gaussian beam is not dependent on the waist of the incident Gaussian beam.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 281, Issue 22, 15 November 2008, Pages 5511–5514
نویسندگان
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