Resonant waveguide field enhancement in dimers.
It is shown that a waveguide mode, which exists between metal dimer particles and does not cut off, produces an enhanced electric field and hence a mechanism for surface-enhanced Raman scattering. Structures can thus be designed that provide large average field enhancement over significant length scales.
Webb
Kevin J
KJ
School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA. webb@purdue.edu
Li
Jia-Han
JH