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State-filling and self-action processes at resonant excitation of excitons in colloidal quantum dotsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
- Авторы: Dneprovskii V., Kozlova M., Wumaier T., Zhukov E., Hieu D.S., Smirnov A.
- Журнал: Proceedings of SPIE - The International Society for Optical Engineering
- Том: 7993
- Год издания: 2011
- Издательство: SPIE, the International Society for Optical Engineering
- Местоположение издательства: Bellingham, WA, United States
- Первая страница: 79931R-1
- Последняя страница: 79931R-8
- DOI: 10.1117/12.881197
- Аннотация: The anomalous nonlinear absorption of colloidal CdSe/ZnS quantum dots has been revealed in the case of resonant excitation of the basic exciton transition by powerful picosecond light pulses: bleaching at moderate input intensities is substituted by retardation of bleaching rate and even by increasing of absorption. The latter has been explained by saturation (state-filling) effect of two-level system with decreasing lifetime of the excited state at high excitation because of Auger recombination. The observed changes of output intensity cross-section profile versus exciting intensity were attributed to the creation of transparency channel in the cell with highly absorbing colloidal solution of quantum dots by laser beam due to state-filling, strip-effect and finally self-diffraction of Fresnel or Fraunhofer type by induced aperture.
- Добавил в систему: Козлова Мария Владимировна
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