Infrared resonant absorption by coupled surface plasmon modes in an ultra-thin metamaterial

Peter Hobson; Piers Andrew; Benny Hallam; Chris Lawrence

doi:10.1117/12.2061055

12 September 2014 Infrared resonant absorption by coupled surface plasmon modes in an ultra-thin metamaterial

Peter Hobson, Piers Andrew, Benny Hallam, Chris Lawrence

Proceedings Volume 9160, Metamaterials: Fundamentals and Applications 2014; 916011 (2014) https://doi.org/10.1117/12.2061055
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

We report angle-resolved infrared reflectivity measurements from a substantially sub-wavelength thickness, textured, metal-dielectric-metal microcavity. The two-dimensional surface texturing causes the structure to support flat-band, surface plasmon modes exhibiting efficient diffractive coupling to free radiation. Additionally, we observe a transverse magnetic mode that is due to phonon absorption within the dielectric spacer layer of the structure. The nature of these electromagnetic modes, their mutual interactions and the device band structure has been characterized by numerical modelling of the experimental data. With the exception of the phonon mode, the analyzed modes show that absorption of incident radiation predominantly occurs in the metal layers of the structure and at frequencies dictated by the geometry of the patterned top surface.

Citation Download Citation

Peter Hobson, Piers Andrew, Benny Hallam, and Chris Lawrence "Infrared resonant absorption by coupled surface plasmon modes in an ultra-thin metamaterial", Proc. SPIE 9160, Metamaterials: Fundamentals and Applications 2014, 916011 (12 September 2014); https://doi.org/10.1117/12.2061055

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