Figure 4
From: Higher order microfibre modes for dielectric particle trapping and propulsion
Calculated optical forces acting on a particle.
(a) Magnitude of gradient and scattering (Fg-HOM, Fs-HOM) forces for the LP11 mode set and (Fg-FM, Fs-FM) forces for LP01 mode, respectively, on a 3 μm polystyrene particle. Scattering and gradient forces of HOMs are considerably stronger than those of the FM at the HOM cut-off or larger fibre diameter. (b) Particle size dependence of optical forces for the 2 μm fibre diameter. Larger particles experience stronger optical forces. The waist power was 25 mW.
