SECOND-ORDER NONLINEAR OPTICAL PROPERTIES OF CHROMOPHORE-COATED PARTICLES: SYMMETRY CONSIDERATIONS
| Autor: | Koen Clays, Kasper Baert, Renaud A. L. Vallée, Kurt Wostyn |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) business.industry Scattering Isotropy Hyperpolarizability Nonlinear optics Chromophore Molecular physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Depolarization ratio Molecular symmetry Optoelectronics business Photonic crystal |
| Zdroj: | Journal of Nonlinear Optical Physics & Materials. 16:27-35 |
| ISSN: | 1793-6624 0218-8635 |
| Popis: | The second-order nonlinear optical properties of polystyrene particles coated with two well-characterized nonlinear optical chromophores with different molecular symmetry have been studied. From the markedly different depolarization ratio for the hyper-Rayleigh scattering from the molecular scatterers and from the largely different second-harmonic intensity from particles coated with these chromophores, we conjecture that contributions from antisymmetric molecular electronic states are necessary to observe second-order nonlinear effects from centrosymmetrical particles in isotropic solution. |
| Databáze: | OpenAIRE |
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