We describe a type of multilayer dielectric coating designed to enhance the intensity of evanescent waves. The coating consists of a stack of alternating high- and low-index quarter-wave layers followed by a final low-index layer whose thickness is chosen to optimize the evanescent-wave intensity. Indirect measurements of the film properties are in good agreement with theory.
© 1996 Optical Society of America
Original Manuscript: August 8, 1995
Revised Manuscript: December 20, 1996
Published: May 1, 1996
Renée C. Nesnidal and Thad G. Walker, "Multilayer dielectric structure for enhancement of evanescent waves," Appl. Opt. 35, 2226-2229 (1996)