Zobrazeno 1 - 10
of 55
pro vyhledávání: '"K. K. Pukhov"'
Publikováno v:
Nanoscale. 13:10002-10009
The spontaneous emission rate (SER) of a chromophore in a nanoparticle (NP) is determined by the modification of the electric field by its environment. Previous studies of this local field effect have dispersed NPs in non-chemically interacting media
Publikováno v:
Recent Optical and Photonic Technologies
In recent years, great interest has been expressed by researchers in the optical properties exhibited by nanomaterials, including theoretical and experimental studies of the spontaneous lifetime of optical centers in nanosized samples (Christensen et
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2d1238f37d515b78518d41d4317f02f
http://www.intechopen.com/articles/show/title/spontaneous-and-stimulated-transitions-in-impurity-dielectric-nanoparticles
http://www.intechopen.com/articles/show/title/spontaneous-and-stimulated-transitions-in-impurity-dielectric-nanoparticles
Autor:
K. K. Pukhov
Publikováno v:
Physics of the Solid State. 61:894-900
Formulas for the rates of spontaneous radiative decay of excitation of luminescent centers located in subwavelength spherical core–shell nanoparticles and in the nanocomposite matrix are derived. Effective medium models and local field problems con
Autor:
K. K. Pukhov
Publikováno v:
Optical Materials. 74:166-169
Here we discuss the radiative decays of excited states of transition elements located inside and outside of the subwavelength core-shell nanoparticles embedded in dielectric medium. Based on the quantum mechanics and quantum electrodynamics, the gene
Autor:
K. K. Pukhov
Publikováno v:
Journal of Luminescence. 169:503-506
Here we present a summary of the theoretical studies of the emission rates modifications of emitter placed inside or near the subwavelength nanoparticle that are embedded in a medium. The change in spontaneous emission rate as a function of the effec
Autor:
S. K. Sekatskii, K. K. Pukhov
Publikováno v:
Optics and Spectroscopy. 117:875-879
Cooperative fluorescence resonance energy transfer effect is experimentally demonstrated for a few crystals doped with rare-earth ions. We show that, at the liquid helium temperatures in similar crystals, coherent cooperative fluorescence resonance e
Publikováno v:
Optics and Spectroscopy. 114:868-872
Taking into account electron-phonon interaction effects, we have studied the radiative characteristics of doped nanoellipsoids in a dielectric medium with an arbitrary fraction of nanoparticles in a nanocomposite. The obtained analytical expressions
Autor:
Sergey K. Sekatskii, V. V. Osiko, Tasoltan T. Basiev, K. K. Pukhov, Alexey Kornienko, Irina Basieva
Publikováno v:
Journal of Modern Optics
A systematic analysis of decoherence rates due to electron-phonon interactions for optical transitions of rare-earth dopant ions in crystals is presented in the frame of the point charge model. For this model, the large value of any one of the matrix
Publikováno v:
Optics and Spectroscopy. 111:386-392
We examine the physical factors that influence the radiative transitions of small-radius optical centers in ellipsoidal nanoparticles. The main objective of this work is to reveal to the extent to which changes in the phonon subsystem and electron-ph
Autor:
Tasoltan T. Basiev, K. K. Pukhov
Publikováno v:
Optical Materials. 32:1664-1667
Here we present the results of our theoretical study of the optical characteristics (lifetimes, IR absorption coefficient, Raman gain coefficient) for small-radius optical centers in subwavelength spherical and ellipsoidal nanocrystals embedded in a