Model by a 3D finite element method of resonances in Raman Spectroscopy.
Model by a 3D finite element method of resonances in Raman Spectroscopy.


T. Grosges and D. Barchiesi
Group for Nanotechnology and Optical Instrumentation
LNIO/ICD - FRE CNRS 2848,
12 rue Marie Curie - BP 2060
F-10010 Troyes cedex
France




Abstract




The present research consists to optimize and predict experimental results for near field optic and microscopy. At the first stage, it convient to predict the influence of three experimental parameters:

- 1) The optimal detection conditions, where a detected signal will be maximum.
- 2) Plasmon resonance conditions, taking into account the object but also the distance between the near-field probe and the object (possible modifications of resonance conditions, in order to obtain a measurable signal).
- 3) Light conditions (reflexion, angle, polarization).

In order to increase the ratio signal/noise in Raman microscopy and thus to optimize these parameters, we must simulate numeritically the selected system and modifie the influent parameters.

The development of a such method for the 3D resolution is the main aim of this research. It is based on a Finite Elements method and will be verified and confirmed with a coupled-dipole method.




oo BACK -goto- HOME oo

© Copyright 2007-2012 Thomas Grosges.