Observation of plasmon resonance linewidth narrowing in embedded gold nanoparticle arrays

Ronen Adato; Ahmet A. Yanik; Hatice Altug

doi:10.1117/12.826782

2 September 2009 Observation of plasmon resonance linewidth narrowing in embedded gold nanoparticle arrays

Ronen Adato, Ahmet A. Yanik, Hatice Altug

Proceedings Volume 7394, Plasmonics: Metallic Nanostructures and Their Optical Properties VII; 73941X (2009) https://doi.org/10.1117/12.826782
Event: SPIE NanoScience + Engineering, 2009, San Diego, California, United States

Abstract

We demonstrate enhanced diffractive coupling resulting in sharpened extinction resonances in periodic arrays of metal nanoparticles embedded effectively below the substrate surface. Strongly enhanced near fields with large spatial overlap with the substrate material are shown to be associated with these extinction features. In particle arrays fabricated on substrates there is a phase velocity mismatch between light propagating above and below the substrate surface, which hinders diffractive coupling and access to such narrow resonances. In contrast, the embedding of the particle arrays beneath the substrate surface, achieved via an etching procedure, offers a more homogeneous dielectric background which improves the diffractive coupling, resulting in the sharp features associated with strong near field enhancements.

Citation Download Citation

Ronen Adato, Ahmet A. Yanik, and Hatice Altug "Observation of plasmon resonance linewidth narrowing in embedded gold nanoparticle arrays", Proc. SPIE 7394, Plasmonics: Metallic Nanostructures and Their Optical Properties VII, 73941X (2 September 2009); https://doi.org/10.1117/12.826782

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