NDLI: Investigation of the bistability in J aggregates upon resonant optical excitation with inclusion of pair correlations between molecules

Content Provider	Springer Nature Link
Author	Nesterov, L. A. Rosav, N. N.
Copyright Year	2016
Abstract	A theory of resonant interaction with radiation of J aggregates based on chains of two-level molecules coupled by the retarded dipole‒dipole interaction has been developed. The effect of pair correlations between the chain molecules on the bistable response of this system under the influence of external resonant radiation has been investigated within the homogeneous chain model. Traditionally, these systems have been described using single-particle density matrices corresponding to each molecule. In this description, twoparticle interactions are represented in the factorized form and do not include correlations between the interacting molecules. In this study, the correlation corrections have been estimated taking into account the influence of only the nearest neighbors, while their values have found to be of the same order of magnitude as the factorized two-particle expectation values for which these corrections have been calculated. As a result, the dipole‒dipole interaction of a particular molecule with the nearest neighbors is so strong that the description of this interaction in the factorized form becomes inappropriate and can be used only for a qualitative analysis of the response of the chain. In order to obtain correct quantitative characteristics, it is necessary to abandon the factorization of the two-particle expectation values, at least for nearest neighbors.
Starting Page	331
Ending Page	338
Page Count	8
File Format	PDF
ISSN	0030400X
Journal	Optics and Spectroscopy
Volume Number	121
Issue Number	3
e-ISSN	15626911
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-09-17
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optics, Lasers, Photonics, Optical Devices
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials

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