Diffraction and dispersion management in active nanostructured metamaterials

Viktor A. Podolskiy; Alexander A. Govyadinov

doi:10.1117/12.731640

28 September 2007 Diffraction and dispersion management in active nanostructured metamaterials

Viktor A. Podolskiy, Alexander A. Govyadinov

Proceedings Volume 6638, Photonic Metamaterials; 66380Q (2007) https://doi.org/10.1117/12.731640
Event: NanoScience + Engineering, 2007, San Diego, California, United States

Abstract

We explore the perspectives offered by nanoplasmonic metamaterials for manipulation of optical signals at the nanoscale. It is shown that in contrast to conventional dielectric waveguides, plasmonic and anisotropy-based waveguides support a number of highly-confined optical modes even when the waveguide size is much smaller than the wavelength. The effective modal indices in these systems can be either positive or negative and are strongly affected by material composition and waveguide size, providing a mechanism for manipulating the phase velocity and diffraction limit at the nanoscale. In active metamaterials, the combined effect of waveguide- and material-induced dispersions leads to a versatile control over the group velocity which can be changed from negative to large or small (in comparison with the speed of light in vacuum) positive values by a relatively weak modulation of material properties. In the end, the active metamaterial provide a unique platform for independent manipulation of group and phase velocities of electromagnetic radiation in sub-diffraction areas.

Citation Download Citation

Viktor A. Podolskiy and Alexander A. Govyadinov "Diffraction and dispersion management in active nanostructured metamaterials", Proc. SPIE 6638, Photonic Metamaterials, 66380Q (28 September 2007); https://doi.org/10.1117/12.731640

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