Modeling of the diffraction of the focused pulsed laser beam on a binary phase plate

摘要

In this work, the modeling of the propagation of the pulsed focused Gaussian beam through the phase optical element, designed to divide the incident beam into two closely spaced light spots, has been carried out. The simulation has been performed on the base of the finite-difference time-domain method, implemented in the software MEEP. The analysis has been shown a noticeable pattern change in the focal region using short pulses in comparison with a long signal, however, the structuring of the pulse laser beam by using the phase optical element passes successfully.