Optics and Photonics Society of Iran

In this article, the theoretical studies of high harmonic generation with the use of plasmonic field is presented. This kind of field appears when plasmonic nanostructures are illuminated by an intense few-cycle laser and have a particular spatial dependency, depending on the geometrical shape of the nanostructures. It is significantly shown that the linear nonhomogeneous character of the laser enhanced field plays an important role in expanding the HHG spectrum and the nonlinear inhomogenity of the laser field expands it more. The 1D time dependant schrodinger equation (TDSE) is solved numerically for Hydrogen atom to investigate the harmonic spectrum and generate single attosecond pulse