کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
852644 | 909404 | 2008 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Focusing properties of Gaussian beam by a nonspiral phase plate system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Focusing properties of Gaussian beam by a nonspiral phase plate system Focusing properties of Gaussian beam by a nonspiral phase plate system](/preview/png/852644.png)
چکیده انگلیسی
In this article, a nonspiral plate is investigated numerically by vector diffraction theory to observe the focusing properties of Gaussian beams. Both low- and high-numerical-aperture (NA) optical systems are considered in the investigation. It is found that the parameter of NA and the phase vary rate of the phase plate influence the focal intensity distribution considerably. When a nonspiral plate is used to provide linear phase variation on one half of the Gaussian beam, it may adjust the focal spot considerably and conveniently. Changing the vary rate of the phase plate or the parameter of NA can alter optical intensity distribution; some novel focal spots and focal switch may also occur.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 119, Issue 14, November 2008, Pages 671–681
Journal: Optik - International Journal for Light and Electron Optics - Volume 119, Issue 14, November 2008, Pages 671–681
نویسندگان
Jinsong Li, Xiumin Gao, Jian Wang, Songlin Zhuang,