کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1535405 1512626 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tight focusing of partially coherent and radiallly polarized vortex beams
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Tight focusing of partially coherent and radiallly polarized vortex beams
چکیده انگلیسی

We investigate the tight focusing properties of partially coherent and radially polarized vortex beams by use of vectorial Debye theory. It is found that the intensity profiles and the degree of coherence in the focal region are strongly dependent on the numerical aperture (NA) of the focusing objective, the parameters of the binary diffractive optical element (DOE) with several concentric zones, the topological charge, and the coherence property of incident vortex beams. Some interesting beam patterns, including a three dimensions (3D) maximally homogenized field with a very strong longitudinal component, a subwavelength optical bubble, and a hollow optical needle with quite long focal depth, can be generated by appropriately adjusting the above parameters. These beams are useful in microscopy techniques such as particle acceleration, laser processing, etc.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 295, 15 May 2013, Pages 5–10
نویسندگان
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