There has been a recent renewal of interest in anomalously high energy transfer through otherwise opaque metal film geometries. One of the earliest such systems, that of surface plasmon cross coupling in a sinusoidally corrugated continuous metal film, was studied by Gruhlke et al [Phys. Rev. Lett. 56, 2838 (1986)]. We show that it is possible to use a nonperturbative method to accurately predict this coupling, and we use this method to analyze both intrinsic coupling in symmetric structures and grating-assisted cross coupling in asymmetric structures.
© 2000 Optical Society of America
Zhaoming Zhu and T. G. Brown, "Nonperturbative analysis of cross coupling in corrugated metal films," J. Opt. Soc. Am. A 17, 1798-1806 (2000)