کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
851131 909302 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hyperbolic-cosine-Gaussian beam with sine-azimuthal variation wavefront
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Hyperbolic-cosine-Gaussian beam with sine-azimuthal variation wavefront
چکیده انگلیسی

Intensity distribution in focal plane plays an important role in many optical systems and has attracted much attention. In this paper, focusing properties of hyperbolic-cosine-Gaussian (cosh-Gaussian) beam with sine-azimuthal variation wavefront is investigated. Wavefront distribution is the sine function of the azimuthal angle. Results show that the sine parameter in the sine part of the cosh-Gaussian and decentered parameter associated with the cosh parts affect focal pattern considerably. Many novel focal patterns may occur, including cross-shape focal pattern with four intensity peak, intensity peak array, intensity peak wheel, and swallowtail multiple-peak focal pattern. The focal pattern evolution principle on increasing decentered parameter differs remarkably for different sine parameter. In addition, some focal spots are smaller than focal spot with incident Gaussian beam, which means super resolution effect appears under condition of certain sine parameter and decentered parameter.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 123, Issue 21, November 2012, Pages 1901–1906
نویسندگان
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