Enhancing intensity of emitted light from a ring by incorporating a circular groove
Journal
Optics Express
Journal Volume
15
Journal Issue
23
Pages
15029-15034
Date Issued
2007
Author(s)
Abstract
We fabricated a ring containing a single circular groove (RCG) on silver film and which was supported on a glass substrate. We found that by changing the mean radius of the circular groove, the light intensity emitted from the RCG can be modulated by using the scattering light from the circular groove. In addition, we also fabricated circular grooves with the same depth but of different widths so that we could examine the scattering light behavior of the grooves. Herein, we propose a theoretical model which takes into account the amplitude modulation of the cylindrical waves. Our results showed that our proposed model agreed well with the experimental results.
SDGs
Type
journal article