Optical trapping force with annular and doughnut laser beams based on vectorial diffraction
نویسندگان
چکیده
منابع مشابه
Long-Distance Axial Trapping with Focused Annular Laser Beams
Focusing an annular laser beam can improve the axial trapping efficiency due to the reduction of the scattering force, which enables the use of a lower numerical aperture (NA) objective lens with a long working distance to trap particles in deeper aqueous medium. In this paper, we present an axicon-to-axicon scheme for producing parallel annular beams with the advantages of higher efficiency co...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2005
ISSN: 1094-4087
DOI: 10.1364/opex.13.001260