Optical trapping and polarization-controlled scattering of dielectric spherical nanoparticles by femtosecond laser pulses

► Optical trapping behavior of 50-nm-sized polystyrene beads by fs laser beam. ► Trapped nanoparticles in a single trapping site are observed as a bright spot. ► Scattered nanoparticles from the trapping site are observed as a bright locus. ► We evaluated our findings based on radiation and temporal forces of laser pulses. ► Axial electric field induces lateral components of scattering and temporal forces.