Bulletin of the American Physical Society
2007 APS March Meeting
Volume 52, Number 1
Monday–Friday, March 5–9, 2007; Denver, Colorado
Session X38: Focus Session: Negative Index Materials: Concepts to Applications III
8:00 AM–10:36 AM,
Friday, March 9, 2007
Colorado Convention Center
Room: 501
Sponsoring
Unit:
FIAP
Chair: Nader Engheta, University of Pennsylvania
Abstract ID: BAPS.2007.MAR.X38.2
Abstract: X38.00002 : A new mechanism for negative refraction and focusing using selective diffraction from surface corrugation*
8:36 AM–8:48 AM
Preview Abstract
Abstract
Authors:
W. T. Lu
Y. J. Huang
P. Vodo
R. K. Banyal
C. H. Perry
S. Sridhar
(Electronic Materials Research Institute and Department of Physics, Northeastern University)
Refraction at a smooth interface is accompanied by momentum transfer normal to the interface. We show that corrugating an initially smooth, totally reflecting, non-metallic interface provides a momentum kick parallel to the surface, which can be used to refract light negatively or positively. This new mechanism of negative refraction is demonstrated by visible light and microwave experiments on grisms (grating-prisms), and is used to create a new optical device, a grating lens. A plano-concave grating lens is demonstrated that focuses plane microwaves to a point image. Single-beam all-angle-negative-refraction is achieved by incorporating a surface grating on a flat multilayered material. These results show that customized surface engineering can be used to achieve negative refraction even though the bulk material has positive refractive index. The surface periodicity provides a tunable parameter to control beam propagation leading to novel optical and microwave devices.
*Work supported by AFRL through contract \# FA8718-06-C-0045 and NSF through PHY- 0457002.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.MAR.X38.2
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2018 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
1 Research Road, Ridge, NY 11961-2701
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700