Directive emission from a single subwavelength aperture in a periodically corrugated silver film

Filippo Capolino; Rui Qiang; David R. Jackson; Ji Chen

doi:10.1117/12.725948

4 May 2007 Directive emission from a single subwavelength aperture in a periodically corrugated silver film

Filippo Capolino, Rui Qiang, David R. Jackson, Ji Chen

Proceedings Volume 6581, Metamaterials II; 65810E (2007) https://doi.org/10.1117/12.725948
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

Abstract

We present here an algorithm to evaluate the field in the near zone produced by a finite-size electromagnetic source in a periodic structure, referred to as the array scanning method (ASM) - FDTD method. Using a frequency-dependent silver permittivity model, obtained from measurement at optical and infrared frequencies, we implemented the corresponding modeling equations in the ASM-FDTD algorithm using the Z-transform technique. The developed algorithm is applied to the study of the enhanced radiation of a magnetic line source in a corrugated silver film, and the results indicate that the enhancement is due to the excitation of a leaky mode. We also show that other waves may be excited by the source depending on its location, and how this affects the radiation pattern.

Citation Download Citation

Filippo Capolino, Rui Qiang, David R. Jackson, and Ji Chen "Directive emission from a single subwavelength aperture in a periodically corrugated silver film", Proc. SPIE 6581, Metamaterials II, 65810E (4 May 2007); https://doi.org/10.1117/12.725948

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available