Atomic nanostructured systems with negative extinction
This article proves the fundamental possibility of amplifying light by a system of indistinguishable atoms, taking into account the delayed dipole-dipole interaction in the field of external radiation. It is shown that the amplification of light occurs from an antisymmetric quantum state of a pair of identical atoms, one of which is in an excited state. A formula is obtained for the polarizability of atoms in the ground state, the dispersion dependence of which contains an inflection point separating the wavelength regions with positive and negative dispersion. In the region of negative dispersion, the extinction cross section of an atomic system is negative, that is, this system becomes a system that amplifies light.
Keywords
atomic nanostructured systems, resonant interaction of atoms in a radiation field, electric dipole approximation, indistinguishability of atoms, negative extinction, extinction and scattering cross sections of a diatomic system, resonant energy transfer between atomsAuthors
Name | Organization | |
Gadomsky O.N. | Ulyanovsk State University | gadomsky@mail.ru |
Musich D.O. | Ulyanovsk State University | zokeraf@mail.ru |
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