Study Of Coherent Control Of Nanoscale Plasmon Field In Attosecond Step

Currently, nanophotonics has become a very important research focus, and as an important area of research in nanophotonics, ultrafst surface plasmon polaritons is of great potential for development, which involves physics, materials, chemistry, biology, medicine, energy and many other disciplines and cutting-edge, and there is crossover and fusion research in the development of nano-photonic devices, to improve the eff iciency of energy development and utilization,it may have a broad application.In this paper, at first make a general introduction of surface plasmon, and the oretical simulation of two different nanostructures, nano-triangle and nano T by FDTD Solutions Software, and also composed symmetrical structure in-depth study, explor es the near-field distribution characteristics of nanostructures, and near-field coherent control law. Finally, come to the point of experiment, specific experimental design is made for the coherent control of the relative phase delay, the establishment of the Arab-second delay system.Specific contents and results include: make an introduction of the near-field enha ncement obtained theoretical basis, by near-field simulation of nano-triangle, obtained near-field distribution characteristics of nano-triangle, triangle quadrupole resonance m ode occurs in the short wavelength, dipole resonance at longer wavelength; Throu gh correlations of the different structural parameters nanostructure formant position fo und in TE and TM polarizations, changing the thickness of the nano-triangle, the edg e length, and the distance between the two triangles, resonance peak occurs correspon ding movement. Then make an introduction of near-field coherent control of coheren t control simulation of nano-triangle, obtained rules by changing far-field light field p hase to control near-field coherent control; subsequently Nano T-shaped structure has been more in-depth study of coherent control, coherent control law has been further confirmed, then according to structural features, make long-range coherent control; In order to give a near-field coherent control experiment, established an attosecond sec ond delay system, used for controlling the relative phase difference,it reached the r esolution, with good stability.