Transmission enhancement in an array of subwavelength slits in aluminum due to surface plasmon resonances
Article first published online: 17 NOV 2005
© 2005 Lucent Technologies Inc.
Bell Labs Technical Journal
Special Issue: Nanotechnology
Volume 10, Issue 3, pages 143–150, Autumn (Fall) 2005
How to Cite
Chan, H. B., Marcet, Z., Carr, D., Bower, J. E., Cirelli, R., Ferry, E., Klemens, F. P., Miner, J. F., Pai, C.-S. and Taylor, J. A. (2005), Transmission enhancement in an array of subwavelength slits in aluminum due to surface plasmon resonances. Bell Labs Tech. J., 10: 143–150. doi: 10.1002/bltj.20109
- Issue published online: 17 NOV 2005
- Article first published online: 17 NOV 2005
- Manuscript Accepted: JUL 2005
The coupling of light to surface plasmons through periodic subwavelength metallic structures could strongly modify the optical properties of a metal film. We demonstrate that the optical transmission through an array of subwavelength slits is as high as 80% at resonance, even though the width of each slit is almost 10 times smaller than the wavelength and the slits occupy only 25% of the area of the metal. Numerical calculations suggest that the field intensity is strongly enhanced near the metal surface. The field enhancement could be used for generating nonlinear optical effects and for high sensitivity detection of nanomechanical displacement. © 2005 Lucent Technologies Inc.