Premium
An Improved Virtual Mode Theory of ATR Experiments on Surface Polaritons. Application to Long‐Range Surface Plasmon‐Polaritons in Asymmetric Layer Structures
Author(s) -
Wendler L.,
Haupt R.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221430115
Subject(s) - polariton , surface plasmon polariton , prism , optics , attenuated total reflection , reflection (computer programming) , range (aeronautics) , surface plasmon , surface (topology) , radiative transfer , materials science , layer (electronics) , physics , computational physics , plasmon , computer science , geometry , nanotechnology , mathematics , infrared , composite material , programming language
The damping properties of surface polaritons, especially long‐range surface plasmon‐polaritons (LRSP) in asymmetric layer structures are analyzed taking into account the presence of a coupling prism. Both, the response treatment to calculate attenuated‐total‐reflection (ATR) spectra and the virtual mode treatment are used. Two different types of virtual modes are analyzed. One of them describes the propagation properties of the surface polariton in the presence of both intrinsic and radiative damping. The other type describes a surface polariton with a driving field and hence this mode allows to find out the optimum conditions for the ATR experiment. These two modes are investigated in detail and the results of the numerical calculation are presented in graphical form. The results for the ATR configuration show that in asymmetric embedded silver layers the propagation length exceeds the value for the symmetric embedded one significantly.