Second-harmonic generation in graded metallic films.
We study the effective second-harmonic generation (SHG) susceptibility in graded metallic films by invoking the local field effects exactly and further numerically demonstrate that graded metallic films can serve as a novel optical material for producing a broad structure in both the linear and the SHG response and an enhancement in the SHG signal.
Huang
J P
JP
Department of Physics, The Chinese University of Hong Kong, Shatin, NT, Hong Kong. jphuang@mpip-mainz.mpg.de
Yu
K W
KW