Lee, N.
, Hartschuh, R.
, Mehtani, D.
, Kisliuk, A.
, Foster, M.
, Sokolov, A.
, Maguire, J.
and Green, M.
(2007),
High Contrast Scanning Nano-Raman Spectroscopy of Silicon, Journal of Raman Spectroscopy
(Accessed April 23, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
High Contrast Scanning Nano-Raman Spectroscopy of Silicon
Published
Author(s)
N Lee, R Hartschuh, D Mehtani, A Kisliuk, M D. Foster, Alexei Sokolov, J F. Maguire,
Abstract
We have demonstrated that scanning nano-Raman spectroscopy (SNRS), generally known as tip enhanced Raman spectroscopy (TERS), with side illumination optics can be effectively used for analysis of silicon based structures at the nanoscale. Even though the side illumination optics presents disadvantages, such as difficulties in optical alignment and shadowing by the tip, it has the critical advantage that it may be used for the analysis of non-transparent samples. Key for making SNRS effective for imaging Si samples is the optimization of the contrast between near-field and far-field (background) Raman signals. This has been achieved by optimizing the beam polarization, resulting in an order of magnitude improvement in the contrast. We estimate the lateral resolution of our Raman images to be 20nm.Citation
Journal of Raman Spectroscopy
Volume
38
Issue
6
Pub Type
Journals
Keywords
new field optics, raman spectroscopy, silicon
Citation
Created June 14, 2007, Updated October 12, 2021