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Optics and Spectroscopy, 2018, Volume 125, Issue 5, Pages 658–663
DOI: https://doi.org/10.21883/OS.2018.11.46831.192-18 (Mi os855) 		 
This article is cited in 1 scientific paper (total in 1 paper)

Nanophotonics International Conference ''PCNSPA 2018 -- Photonic Colloidal Nanostructures: Synthesis, Properties, and Applications'', Saint Petersburg, Russia, June 4--8, 2018

Photodynamics of nonlinear effects of picosecond laser action on CdSe/ZnS QDs colloidal solutions

V. V. Danilovab, A. S. Kulaginacd, N. V. Sibirevd, A. I. Khrebtovc, V. B. Shilovb

a Emperor Alexander I St. Petersburg State Transport University, 190031, St. Petersburg, Russia
b Vavilov State Optical Institute, 199053, St. Petersburg, Russia
c St. Petersburg National Research Academic University of the Russian Academy of Sciences, 194021, St. Petersburg, Russia
d ITMO University, 197101, St. Petersburg, Russia
Full-text PDF (529 kB) Citations (1)
DOI: https://doi.org/10.21883/OS.2018.11.46831.192-18
Abstract: The intensity of incident radiation on photodynamics of nonlinear processes in colloidal solutions of CdSe/ZnS quantum dots is investigated. The difference between nonlinear processes that occur during and after the action of a laser pulse is established and studied experimentally. Analysis of luminescence kinetics during the laser action showed that an increase in intensity leads not only to the effect of optical limiting but also to the appearance of superradiance for quantum dots of different diameters. The pump–probe experiments revealed the effect of a “dynamic valve” caused by an interference of two processes, relaxation via dimensionally quantized levels and phononless relaxation via surface or dark states, at the stage following laser excitation. Mathematical model of deactivation of the highly excited states formulated in the form of Riccati equations showed good agreement with the experiment of Picosecond Laser Action on CdSe/ZnS QDs Colloidal Solutions.
Funding agency Grant number
Ministry of Science and Higher Education of the Russian Federation 16.9791.2017/8.9
This work was supported by the Ministry of Education and Science of the Russian Federation, project no. 16.9791.2017/8.9.
Received: 06.07.2018
English version:
Optics and Spectroscopy, 2018, Volume 125, Issue 5, Pages 716–721
DOI: https://doi.org/10.1134/S0030400X18110097
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: V. V. Danilov, A. S. Kulagina, N. V. Sibirev, A. I. Khrebtov, V. B. Shilov, “Photodynamics of nonlinear effects of picosecond laser action on CdSe/ZnS QDs colloidal solutions”, Optics and Spectroscopy, 125:5 (2018), 658–663; Optics and Spectroscopy, 125:5 (2018), 716–721
Citation in format AMSBIB
\Bibitem{DanKulSib18}
\by V.~V.~Danilov, A.~S.~Kulagina, N.~V.~Sibirev, A.~I.~Khrebtov, V.~B.~Shilov
\paper Photodynamics of nonlinear effects of picosecond laser action on CdSe/ZnS QDs colloidal solutions
\jour Optics and Spectroscopy
\yr 2018
\vol 125
\issue 5
\pages 658--663
\mathnet{http://mi.mathnet.ru/os855}
\crossref{https://doi.org/10.21883/OS.2018.11.46831.192-18}
\elib{https://elibrary.ru/item.asp?id=36905286}
\transl
\jour Optics and Spectroscopy
\yr 2018
\vol 125
\issue 5
\pages 716--721
\crossref{https://doi.org/10.1134/S0030400X18110097}
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    • This publication is cited in the following 1 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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