کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10428779 909425 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gradient force pattern, focal shift, and focal switch in an apodized optical system
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Gradient force pattern, focal shift, and focal switch in an apodized optical system
چکیده انگلیسی
In this paper, the evolution of the gradient force pattern, focal shift, and focal switch induced by a three-portion pure phase-shifting apodizer is numerically investigated in detail. The results show that the proposed apodizer may induce tunable gradient force on the particles in the focal region, focal shift, and focal switch. By adjusting the geometrical parameters of the phase-shifting apodizer, multiple traps may occur with changeable distance between them, and the shape of the optical trap also evolves evidently. More interestingly, for certain geometrical parameters of the proposed apodizer, by changing the phase shift of inner annular portion, the considerable focal shift may occur with focal switch accompanying, which is discussed to show that this kind of apodizer may be a very promising method of transporting trapped particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 116, Issue 3, 13 April 2005, Pages 99-106
نویسندگان
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