title: Plasmon-enhanced spectral changes in surface sum-frequency generation with polychromatic light.
abstract: We theoretically explore the spectral behavior of the fundamental and sum-frequency waves generated from the surface of a thin metal film in the Kretschmann configuration with coherent ultrashort pulses. We show that the spectra of reflected sum-frequency waves exhibit pronounced shifts for the incident fundamental waves close to the plasmon coupling angle. We also demonstrate that the scale of discovered plasmon-enhanced spectral changes is strongly influenced by the magnitude of the incidence angle and the bandwidth of the source spectrum.
authors.affiliation: Department of Electrical and Computer Engineering, Dalhousie University, Halifax, NS, B3J 2X4 Canada.
authors.forename: Luyu
authors.initials: L
authors.lastname: Wang
authors.forename: Franklin
authors.initials: F
authors.lastname: Che
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Ponomarenko
authors.forename: Zhizhang David
authors.initials: ZD
authors.lastname: Chen
mesh_terms: D003116:Color; D003198:Computer Simulation; D008027:Light; D008029:Lighting / Q000379:methods*; D008962:Models, Theoretical; D010783:Photometry / Q000379:methods*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation