Nanolocal time-resolved optical study using scanning probe microscope

摘要

Abstract: New method of time-resolved optical study with high spatial resolution using femtosecond laser pulses focused on (metallic) tip of scanning probe microscope is considered. The system may be incorporated, e.g., into the set for pump- supercontinuum probe studies, i.e. the method can give high time, spatial and spectral resolution simultaneously. The last occur to be compatible with uncertainty principle. Excitation of eigenmodes (plasma oscillations) in the system tip- substrate and their field localized near the tip are analyzed. Their excitation by an external electromagnetic field are considered in a system tip-substrate. Drastic amplification of the effective field in the area of nanometer scale under the tip of a scanning tunneling microscope or an atomic force microscope can be used to study linear and nonlinear optical properties of nanostructures with ultrahigh spatial resolution, as well, as for nanolithography. !6