51 research outputs found
Direct evidence of the failure of electric-dipole approximation in second-harmonic generation from a chiral polymer film
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Synthèse et analyse d'oligothiophènes chiraux pour les matériaux d'optique non-linéaire
No full textTOULOUSE-ENSIACET (315552325) / SudocPARIS-BIUSJ-Thèses (751052125) / SudocPARIS-BIUSJ-Physique recherche (751052113) / SudocSudocFranceF
Synthèse et étude de nouveaux oligothiophènes chiraux actifs en optique non linéaire
No full textPARIS-BIUSJ-Thèses (751052125) / SudocPARIS-BIUSJ-Physique recherche (751052113) / SudocSudocFranceF
Quasi-Phase-Matching in Chiral Materials
No full textInternational audienceThe second-order nonlinear optical coefficients associated with chirality differ in sign for the two mirror-image forms (enantiomers) of a chiral material. Structures comprised of alternating stacks of the enantiomers can therefore be used for quasi-phase-matched frequency conversion, as we demonstrate here by second-harmonic generation from Langmuir-Blodgett films of a helicenebisquinone. Such structures could lead to new types of frequency converters in which both the second-order nonlinear response and quasi-phase-matching arise from the chirality of a material rather than its polar order. PACS numbers: 42.65.Ky, 42.70.Nq, 78.66.Q
A joint theoretical-experimental investigation of the Faraday effect in benzene, toluene, and p-xylene
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