Scattering effect of particles irradiated by ultrashort laser

The light intensity distribution of two nanoparticles irradiated by ultrashort laser is studied. A procedure based on Mie scattering theory and Monte Carlo method is built to simulate and trace the trajectories of photons. Mie scattering theory is mainly used to determine the scattering directions of photons. Through comparing the distribution function of gold particle and blackbody, the scattering between two particles and increasing of laser irradiating width will enhance the light intensity of particles where they are adjacent to each other. The intensity at the bottom of the particle is mainly decided by the albedo and distribution of scattering light.