Manipulation of near field polarization by far field excitation

Shiuan-Yeh Chen; Anne A. Lazarides

doi:10.1117/12.842877

11 February 2010 Manipulation of near field polarization by far field excitation

Shiuan-Yeh Chen, Anne A. Lazarides

Proceedings Volume 7604, Integrated Optics: Devices, Materials, and Technologies XIV; 76041B (2010) https://doi.org/10.1117/12.842877
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

Metal nanoparticle assemblies of designed structure are investigated as substrates for polarization manipulation in the near field region. Gold nanoparticles are known for their optical response due to the excitation of surface plasmons. Surface plasmons in coupled particles can strongly modulate light either in the far or near field region. The most common near field application of coupled particles is as field enhancing substrates for amplifying signals of molecules, for example, Raman signals, IR signals or fluorescence signals. However, the capabilities of metal nanoparticle assemblies can be extended beyond field amplification. Groups of particles can function as small antennas which convert far field excitation into localized fields with specific polarization. Through simulations we demonstrate that the near field polarization can be partially controlled through suitable design of nanoparticle configuration. The benefit of this configuration is that no probe excitation or other localized excitation is needed. The far field signal is converted into specific spots with designed polarization, which is not necessarily the same as excitation. Polarization is manipulated through the coupling of different surface plasmon modes. This polarization modulation extends down to the few nanometer scale and may provide us more control of interaction of light with nano-scale emitters or molecules.

Citation Download Citation

Shiuan-Yeh Chen and Anne A. Lazarides "Manipulation of near field polarization by far field excitation", Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 76041B (11 February 2010); https://doi.org/10.1117/12.842877

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