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This article is cited in 13 scientific papers (total in 13 papers)
OPTICS AND NUCLEAR PHYSICS
Self-diffraction at a dynamic photonic crystal formed in a colloidal solution of quantum dots
A. M. Smirnova, A. D. Golinskayaa, K. V. Ezhovab, V. N. Mantsevicha, V. S. Dneprovskiia a Faculty of Physics, Moscow State University, Moscow, Russia
b Faculty of Laser and Light Engineering, ITMO University, St. Petersburg, Russia
Abstract:
Self-diffraction at a one-dimensional dynamic photonic crystal formed in the colloidal solution of CdSe/ZnS quantum dots has been discovered. This self-diffraction appears simultaneously with self-diffraction at induced transparency channels at the resonant excitation of the main electron-hole (excitonic) transition of quantum dots by two laser beams with a Gaussian intensity distribution over the cross section. It is shown that a nonlinear change in the absorption of colloidal quantum dots results in the formation of a transparency channel and an induced amplitude diffraction grating, and a significant nonlinear change in the refractive index ($\Delta n\approx 10^{-3}$) in the absorbing medium is responsible for the formation of the dynamic photonic crystal. Self-diffracted laser beams are revealed propagating not only in directions corresponding to self-diffraction at the induced diffraction grating but also in directions satisfying the Laue condition.
Received: 14.09.2016
Citation:
A. M. Smirnov, A. D. Golinskaya, K. V. Ezhova, V. N. Mantsevich, V. S. Dneprovskii, “Self-diffraction at a dynamic photonic crystal formed in a colloidal solution of quantum dots”, Pis'ma v Zh. Èksper. Teoret. Fiz., 104:10 (2016), 683–688; JETP Letters, 104:10 (2016), 674–678
Linking options:
https://www.mathnet.ru/eng/jetpl5113 https://www.mathnet.ru/eng/jetpl/v104/i10/p683
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Abstract page: | 164 | Full-text PDF : | 45 | References: | 34 | First page: | 7 |
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