[Photostructuration multipolaire microscopique dans les films polymères par contrôle cohérent de l'orientation moléculaire]
Issue d'une proposition de R.J. Glauber en 1967, l'utilisation de l'interférence entre deux chemins d'absorption à un et deux photons dans le but de briser la centrosymétrie d'un milieu moléculaire est apparue il y a une dizaine d'années. Cet effet a pu être généralisé de manière à induire des ordres orientationels moléculaires à symétrie multipolaire dans les films polymères pour l'optique non linéaire. Dans cet article, nous étendons le concept d'écriture tensorielle multipolaire à la lecture en temps réel des paramètres d'ordre tensoriels photo-induits jusqu'à l'ordre 4. Le contrôle cohérent des faisceaux optiques d'écriture, couplé à une lecture tensorielle des propriétés optiques induites dans le matériau, permet une caractérisation complète de la contribution de chaque chemin d'excitation.
Based on an early proposition by R.J. Glauber in 1967, the possibility to break centrosymmetry in molecular media by interference between one- and two-photon absorption pathways has been implemented in polymers throughout the last decade. This effect has been more recently advantageously generalized to optically induce adjustable multipolar molecular ordering in polymer thin films for nonlinear optics. A major benefit of this approach lies in the control of the final molecular orientational distribution by pure optical parameters such as phase or polarization of write beams. In this article, we extend a tensorial multipolar engineering experiment to encompass tensorial monitoring of photo-induced molecular orientational orders up to the 4th order. Coherent control of optical write beams, combined with real-time tensorial probing of optical properties in the material, provide access to a complete characterization of each excitation pathway contributing to the process.
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Mots-clés : optique non linéaire, stockage holographique d'informations tensorielles, ingénierie des molécules multipolaires, GSH, GTH
Sophie Brasselet 1 ; Sébastien Bidault 1 ; Joseph Zyss 1
@article{CRPHYS_2002__3_4_479_0,
author = {Sophie Brasselet and S\'ebastien Bidault and Joseph Zyss},
title = {Photoinduced multipolar tensorial patterning in polymer films by coherent control of molecular orientation},
journal = {Comptes Rendus. Physique},
pages = {479--492},
publisher = {Elsevier},
volume = {3},
number = {4},
year = {2002},
doi = {10.1016/S1631-0705(02)01333-6},
language = {en},
}
TY - JOUR AU - Sophie Brasselet AU - Sébastien Bidault AU - Joseph Zyss TI - Photoinduced multipolar tensorial patterning in polymer films by coherent control of molecular orientation JO - Comptes Rendus. Physique PY - 2002 SP - 479 EP - 492 VL - 3 IS - 4 PB - Elsevier DO - 10.1016/S1631-0705(02)01333-6 LA - en ID - CRPHYS_2002__3_4_479_0 ER -
%0 Journal Article %A Sophie Brasselet %A Sébastien Bidault %A Joseph Zyss %T Photoinduced multipolar tensorial patterning in polymer films by coherent control of molecular orientation %J Comptes Rendus. Physique %D 2002 %P 479-492 %V 3 %N 4 %I Elsevier %R 10.1016/S1631-0705(02)01333-6 %G en %F CRPHYS_2002__3_4_479_0
Sophie Brasselet; Sébastien Bidault; Joseph Zyss. Photoinduced multipolar tensorial patterning in polymer films by coherent control of molecular orientation. Comptes Rendus. Physique, Volume 3 (2002) no. 4, pp. 479-492. doi : 10.1016/S1631-0705(02)01333-6. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/S1631-0705(02)01333-6/
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