کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
745619 1461744 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tunable gradient force of hyperbolic-cosine–Gaussian beam with vortices
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Tunable gradient force of hyperbolic-cosine–Gaussian beam with vortices
چکیده انگلیسی

Gradient force plays an important role in optical tweezers technique. In this paper, the tunable gradient force in focal plane of the hyperbolic-cosine–Gaussian (ChG) beam is investigated numerically. The ChG beam contains one spiral vortex and one non-spiral vortex. Simulation results show that the gradient force distribution can be altered considerably by decentered parameters of ChG beam, topological number of the spiral vortex, and vortex parameter of the non-spiral vortex. Many novel gradient force patterns can occur, which means corresponding optical traps may come into being, including ring optical trap, multiple-point trap pattern, line optical trap, rectangle trap pattern, and rhombus trap pattern. In addition, force pattern evolution principle may also differ significantly.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 48, Issues 7–8, July–August 2010, Pages 766–773
نویسندگان
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