Nonlinear Raman nano-imaging using plasmons localized at a metallic tip

Taro Ichimura; Yasushi Inouye

doi:10.1117/12.618669

18 August 2005 Nonlinear Raman nano-imaging using plasmons localized at a metallic tip

Taro Ichimura, Yasushi Inouye

Proceedings Volume 5928, Plasmonic Nano-imaging and Nanofabrication; 592802 (2005) https://doi.org/10.1117/12.618669
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Near-field Raman spectroscopy using an apertureless metallic probe has attracted much attention owing to its capability of chemical analysis with high spatial resolution far beyond the diffraction limit. The local plasmon excited at the probe tip amplifies optical near-field in the vicinity of the tip apex, and the local field is used to enhance Raman scattering. The metallic probe contributes not only to the enhancement of the Raman scattering, but also to spectral changes due to the chemical and mechanical interaction between the metal and the molecules. We experimentally and theoretically investigated these two effects in this study. These effects selectively provide vibrational information of the molecules directly adsorbed on the metal, and, therefore, have a potential to improve the spatial resolution. In addition, the metallic probe has also been applied for enhancement of nonlinear Raman scattering. Coherent anti-Stokes Raman scattering (CARS) has been strongly enhanced by the probe, and has provided molecular-vibration images of deoxyribo nucleic acid (DNA) with high spatial resolution.

Citation Download Citation

Taro Ichimura and Yasushi Inouye "Nonlinear Raman nano-imaging using plasmons localized at a metallic tip", Proc. SPIE 5928, Plasmonic Nano-imaging and Nanofabrication, 592802 (18 August 2005); https://doi.org/10.1117/12.618669

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