TY - JOUR T1 - Intense Linearly-polarized Laser Pulse Focusing via Interaction with Periodic Lattice of Nanoparticles TT - Intense Linearly-polarized Laser Pulse Focusing via Interaction with Periodic Lattice of Nanoparticles JF - opsi JO - opsi VL - 21 IS - 0 UR - http://opsi.ir/article-1-818-en.html Y1 - 2015 SP - 1559 EP - 1562 KW - laser KW - nanoparticles lattice KW - nonlinear wave equation KW - self-focusing KW - spot size N2 - The self-focusing of an intense laser beam propagating through a periodic lattice of nanoparticles is studied. Using a perturbative method, wave equation describing the nonlinear interaction of intense laser beams with nanoparticles is derived. The evolution of laser spot size with Gaussian profile for the linear polarizations is considered. It is found that the ratio of nanoparticles radius to separation have a crucial role in the self-focusing property. With available physical parameters, self-focusing can be observed from near IR to UV spectrum ranges. M3 ER -