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Proceedings Paper

Self-diffraction of laser beams in the case of resonant excitation of excitons in colloidal CdSe/ZnS quantum dots
Author(s): V. Dneprovskii; A. Smirnov; M. Kozlova
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Paper Abstract

Self-diffraction of two types has been discovered in the case of resonant excitation of excitons in CdSe/ZnS quantum dots (highly absorbing colloidal solution) by powerful beams of mode-locked laser with picosecond pulse duration. I. The bleaching of exciton transition provokes the creation of transparency channel and laser beam’s self-diffraction at the induced circular aperture. II. Self-diffraction arises for two laser beams intersecting in the cell with colloidal CdSe/ZnS quantum dots due to the induced transient diffraction grating. Nonlinear optical properties responsible for the observed self-action effects in CdSe/ZnS quantum dots are discussed and a method for estimating laser pulse duration is suggested.

Paper Details

Date Published: 8 May 2013
PDF: 7 pages
Proc. SPIE 8772, Nonlinear Optics and Applications VII, 877209 (8 May 2013); doi: 10.1117/12.2017347
Show Author Affiliations
V. Dneprovskii, M.V. Lomonosov Moscow State Univ. (Russian Federation)
A. Smirnov, M.V. Lomonosov Moscow State Univ. (Russian Federation)
M. Kozlova, M.V. Lomonosov Moscow State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 8772:
Nonlinear Optics and Applications VII
Mario Bertolotti; Joseph Haus; Alexei M. Zheltikov, Editor(s)

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