dc.contributor |
Martorell Pena, Jordi |
dc.contributor.author |
Mariano Juste, Marina |
dc.date |
2009-07-09 |
dc.identifier.uri |
http://hdl.handle.net/2099.1/7618 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica |
dc.subject |
Nanostructure materials |
dc.subject |
Spectrometry |
dc.subject |
Interferometry |
dc.subject |
Materials nanoestructurals |
dc.subject |
Espectrometria |
dc.subject |
Interferometria |
dc.title |
Nonlinear optical properties of organo-metallic films |
dc.type |
info:eu-repo/semantics/masterThesis |
dc.description.abstract |
Projecte fet en col.laboració amb l'Institut de Ciències Fotòniques |
dc.description.abstract |
Joining organic molecules and metallic nanoparticles into coupled heterostruc-
tures allows tuning their optical properties and o®ers novel possibilities for manipulating their
emission patterns. This Master Thesis is aimed at probing and understanding the nature of
the optical coupling between plasmonic nanoparticles and organic molecules. We carry out
second harmonic spectroscopy and interferometry experiments on thin flms of the nonlinear
dye crystal violet deposited on glass and on top of silver nanoparticles to study the interplay
between the resonance of the dye and the plasmon modes of the nanoparticles. We find a
small redshift of second harmonic emission from the nanoparticles, while the molecular second harmonic resonance displays a large blueshift of tens of nanometers in the vicinity of the
nanoparticles. Across both resonances a characteristic shift of ¼ in the phase of the generated
second harmonic light is observed by second harmonic interferometry. To explain our ¯nd-
ings, a phenomenological model with two coupled damped anharmonic oscillators is proposed.
With the model, we are able to reproduce the main features of the experimental data. |