Specific features of resonant nonlinear absorption in colloidal solutions of CdSe/ZnS quantum dots View Full Text


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Article Info

DATE

2015-01-23

AUTHORS

V. V. Danilov, A. S. Panfutova, A. I. Khrebtov, T. S. Titova

ABSTRACT

Nonlinear refraction coefficients and nonlinear absorption coefficients of colloidal solutions of CdSe/ZnS quantum dots (QDs) have been measured by the z-scan method. Resonant excitation was carried out by a Nd:YAG laser (λ = 532 nm, τ ∼ 7 ns). QDs have been chosen to correspond to different positions of the peak of the fundamental exciton absorption band with respect to the laser wavelength. The z-scan data are compared with the optical-limitation photodynamics data on CdSe/ZnS QD solutions. The obtained values of nonlinear absorption coefficients and their dependence on the QD size are interpreted in terms of the two-step mechanism of optical limitation. More... »

PAGES

94-98

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0030400x15010099

DOI

http://dx.doi.org/10.1134/s0030400x15010099

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1020521535


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