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Communication dans un congrès

Z-scan determination and ab-initio computations on third-order optical nonlinearities of a styrylquinolinium dye

Abstract :

In order to elucidate the third-order nonlinear optical (NLO) phenomena of the styrylquinolinium dye (1), the nonlinear absorption parameter (ß) and third-order susceptibility (χ(3)) have been measured using the Z-scan measurements. The one-photon absorption (OPA) and two-photon absorption (TPA) characterizations have been determined by configuration interaction (CI) and time-dependent Hartree-Fock (TDHF) methods, respectively. The averaged (isotropic) second hyperpolarizability (〈γ〉) allows the determination of the third-order optical response. The ab-initio calculation on 〈γ〉 with non-zero value reveals that the title dye has relatively good third-order NLO properties. The calculated results of 1 on OPA wavelength, TPA cross-section (δ(ω)) and third-order susceptibility are in reasonable agreement with its experimental data.

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https://hal.univ-angers.fr/hal-03345038
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Soumis le : mercredi 15 septembre 2021 - 12:06:49
Dernière modification le : jeudi 9 décembre 2021 - 15:46:06

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Citation

Asli Karakas, Z. Sofiani, Y. Ceylan, M. Taser, R. Bakalska, et al.. Z-scan determination and ab-initio computations on third-order optical nonlinearities of a styrylquinolinium dye. 16th International Conference on Transparent Optical Networks (ICTON), 2014, Graz, Austria. pp.1-4, ⟨10.1109/ICTON.2014.6876645⟩. ⟨hal-03345038⟩

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