In this paper, we analyze light transmission through a single subwavelength slit surrounded by periodic grooves in layered films consisting of Au and dielectric material. A subwavelength grating is scanned numerically by the finite difference time domain method in two dimensions. The results show that the transmission field can be confined to a spot with subwavelength width in the far field and can be useful in the application of a high-resolution far-field scanning optical microscope. © 2007 IEEE.
|Original language||English (US)|
|Number of pages||4|
|Journal||Journal of Lightwave Technology|
|State||Published - Mar 1 2007|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics