Abstract
We discuss an enhancement-of-energy transfer phenomenon that involves the absorption of a photon and takes place in thin surface layers. The enhancement is effected by the resonant excitation of a waveguide mode in the substrate onto which the layer is adsorbed. The system is studied with a pole analysis, allowing the crucial parameters to be identified and physically interpreted. Complete absorption is possible, and a significant enhancement in the photo yield of a photocathode surface layer is calculated. The energy exchange with finite-size incident beams is considered, leading to the conclusion that the device should be highly sensitive to surface layers approaching a monolayer or less in thickness.
© 1982 Optical Society of America
Full Article | PDF ArticleMore Like This
Ole Keller
J. Opt. Soc. Am. 72(9) 1273-1280 (1982)
M. G. Moharam and T. K. Gaylord
J. Opt. Soc. Am. 72(10) 1385-1392 (1982)
Eli Yablonovitch
J. Opt. Soc. Am. 72(7) 899-907 (1982)