Two-photon absorption spectrum of 3-butoxycarbonylmethylurethane polydiacetylene thin films
| Autor: | D. Grando, D. Fortusini, Stefano Sottini, GianPiero Banfi, Paolo Dainesi |
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| Rok vydání: | 1998 |
| Předmět: |
chemistry.chemical_classification
Spin coating Materials science Wavelength range Spectrum (functional analysis) Analytical chemistry General Physics and Astronomy Infrared spectroscopy Polymer Two-photon absorption chemistry Physical and Theoretical Chemistry Thin film Absorption (electromagnetic radiation) |
| Zdroj: | The Journal of Chemical Physics. 108:4319-4323 |
| ISSN: | 1089-7690 0021-9606 |
| Popis: | We report the two-photon absorption (TPA) spectrum of a film of poly[4,6-dacadiyne-1,10-diolbis(3-butoxycarbonyl-methyl-urethane)]—commonly known as poly(3-BCMU)—in the wavelength range λ=1.6–0.7 μm. We find that the TPA coefficient of the film, which was prepared by spin coating, increases from ≈2 cm/GW at 1.45 μm to 170 cm/GW at 0.8 μm. The main features of the spectrum can be accounted for by a three-level model with a two-photon state positioned at 2.8 eV. |
| Databáze: | OpenAIRE |
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