Spontaneous photoinduced patterning of azo-dye polymer films: the facts

Journal Article · Wed Aug 15 00:00:00 EDT 2007 · Journal of the Optical Society of America. Part B, Optical Physics

DOI:https://doi.org/10.1364/JOSAB.24.001839· OSTI ID:20929769

Hubert, Christophe ^[1]; Fiorini-Debuisschert, Celine; Rocha, Licinio; Raimond, Paul ^[1]; Nunzi, Jean-Michel ^[2]

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1. Laboratoire Cellules et Composants, LITEN-DSEN/GENEC, Commissariat a l'Energie Atomique/Saclay, 91191 Gif-sur-Yvette Cedex (France)
2. PPF Cellules Solaires Photovoltaieques Plastiques, UMR-CNRS 6136, Laboratoire des Proprietes Optiques des Materiaux et Applications, 2 Boulevard Lavoisier, 49045 Angers Cedex (France)

We describe the spontaneous photoinduced patterning of azo-dye polymer films. We have observed that the illumination of an azo-dye polymer film by a uniform single laser beam with normal incidence leads to a self-structurization process that results in the formation of well-ordered submicrometer-sized structures whose organization depends on the light polarization direction. A modulation depth as high as 100 nm can be achieved. The influence of several experimental parameters on the structure formation is studied. Results are discussed and confronted to different models and phenomena already investigated in the literature. A physical origin to this peculiar photopatterning process is proposed.

• OSTI ID: 20929769
• Journal Information: Journal of the Optical Society of America. Part B, Optical Physics, Vol. 24, Issue 8; Other Information: DOI: 10.1364/JOSAB.24.001839; (c) 2007 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AZO DYES
FILMS
ILLUMINANCE
LASERS
MODULATION
POLARIZATION
POLYMERS
VISIBLE RADIATION