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Заглавие документа: | Optical properties of new indotricarbocyanine dye as a limiter of laser radiation power |
Авторы: | Svetlichnyi, V. A. Samtsov, M. P. Bazyl’, O. K. Smirnov, O. V. Mel’nikov, D. G. Lugovskii, A. P. |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Дата публикации: | 2007 |
Издатель: | Journal of Applied Spectroscopy. - 2007. - № 4. - С. 524-532. |
Аннотация: | We present results of experimental and theoretical studies of the optical characteristics of a new indotricarbocyanine dye that is capable of effectively limiting the power of laser radiation in the visible spectral range. The spectral-luminescent and energy characteristics of the dye molecules and their absorption spectra from the excited state with nanosecond resolution are investigated experimentally. Quantum-chemical methods are used to calculate electronic absorption spectra from the ground (S0 → Sn) and excited (S1 → Sn) states and to determine the nature of electronic states of the molecule and the rate constants of intramolecular photo-physical processes. The results of the theoretical research agree with experimental data. It is shown that the investigated dye has singlet-singlet absorption at 400–600 nm. Nonlinear absorption of the dye upon excitation by radiation of the second harmonic of a Nd:YAG laser is studied by z-scanning with an open diaphragm. The ratio of dye absorption cross sections from the excited and ground states at 532 nm is determined in the framework of a three-level model. The results are compared with those for previously studied compounds. |
URI документа: | http://elib.bsu.by/handle/123456789/20954 |
Располагается в коллекциях: | Статьи сотрудников НИИ ПФП |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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2007Optical properties of new indotricarbocyanine dye as a limiter of laser radiation power).pdf | 114,45 kB | Adobe PDF | Открыть |
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