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Proceedings Paper

Optical systems modeling and experimental realization of pump and probe technique: investigation of nonlinear absorption in colloidal quantum dots
Author(s): A. Smirnov; A. Golinskaya; K. Ezhova; M. Kozlova; V. Dneprovskii
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Paper Abstract

Two optical systems modeling of laser and broadband radiation focusing, that is necessary for realization of the pump and probe method, was carried out in this work. Modeling was utilized to construct experimental setup for transmission spectra measuring of studied sample by probe nanosecond broadband radiation (coumarin photoluminescence) depending on the intensity of the nanosecond laser pump pulses. The saturation effect of absorption and the induced charge Stark-effect coexistence and predominate issue of these effects are determined by power of optical excitation. In dependence of tuning of excitation radiation frequency from basic exciton transition frequency nonlinear effects in colloidal CdSe/ZnS quantum dots has been investigated.

Paper Details

Date Published: 27 April 2016
PDF: 9 pages
Proc. SPIE 9889, Optical Modelling and Design IV, 98890R (27 April 2016); doi: 10.1117/12.2227855
Show Author Affiliations
A. Smirnov, Lomonosov Moscow State Univ. (Russian Federation)
A. Golinskaya, Lomonosov Moscow State Univ. (Russian Federation)
K. Ezhova, ITMO Univ. (Russian Federation)
M. Kozlova, Lomonosov Moscow State Univ. (Russian Federation)
V. Dneprovskii, Lomonosov Moscow State Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 9889:
Optical Modelling and Design IV
Frank Wyrowski; John T. Sheridan; Youri Meuret, Editor(s)

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