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- W2014372934 abstract "The most promising sphere of the application of the laser trapping of neutral particles is microbiology. To determine the optimum parameters of the laser trap for transparent neutral particles, a computer model of the interaction of tightly focused laser beams of various modes with a transparent dielectric sphere was created based on the laws of the ray and wave optics. In modeling the Laguerre-Gaussian laser modes L-G 0 0 , L-G 0 1 , L-G 0 2 , L-G 0 3 , L-G 0 4 , L-G 1 0 , L-G 2 0 and L- G 1 1 were used and latex spheres suspended in water were simulated to serve as transparent dielectric particles. The reason why transparent latex spheres had been selected is that many bio-objects are transparent for red and near IR of the light ranges. For all applied laser modes their forces of action on the sphere are calculated both in axial and transversal directions of the beam propagation. It was revealed that the Laguerre-Gaussian beams generate axial reverse forces exceeding those of the zero Gaussian mode. At the same time, the transversal forces of trapping are stronger at the zero Gaussian mode. Besides, the forces of interaction of the Gaussian mode (TEM00), focused with different micro- objectives for latex spheres of various diameters, are calculated. It was found that for the three simulated micro- objectives in the transversal direction of the largest force of trapping is provided by the micro-objective with the smallest numerical aperture (NA equals 0,4) while and in the longitudinal direction -- by the micro-objective with the maximum numerical aperture (NA equals 1,25)." @default.
- W2014372934 created "2016-06-24" @default.
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- W2014372934 date "2001-05-09" @default.
- W2014372934 modified "2023-09-27" @default.
- W2014372934 title "Optical traps formed by different laser modes" @default.
- W2014372934 doi "https://doi.org/10.1117/12.426682" @default.
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