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Journal of Materials Science and Nanotechnology | Volume 3
October 07-08, 2019 | Frankfurt, Germany
Materials Science and Engineering
3rd International Conference on
Mater Sci Nanotechnol, Volume 3
Electromagnetic excitations in a non-ideal microcavity lattice
Vladimir V Rumyantsev
A A Galkin Institute for Physics & Engineering, Ukraine
The advent of optoelectronic devices utilizing various
recent advances in photonics such as the harvesting of
light by nanophotonic waveguides or quantum information
processing has elevated the importance of the correct
theoretical understanding of nanocrystalline photonic
structures. A special class of photonic crystals featured by
a strong coupling between quantum excitations (excitons)
and optical fields is called polaritonic crystals. Examples
of polaritonic structures are spatially periodic systems of
coupled microcavities (resonators) as well as by the arrays of
quantum dots embedded within photonic nanostructures.
Lately, there has been a growing interest for optical modes
in microcavity arrays with embedded quantum dots.
Basing on our previously developed concepts of non-ideal
polaritonic structures in the present work we study the
effect of random uneven spacing of cavities on the dispersion
characteristics of electromagnetic excitations in 1D and
2D microcavity lattices. More specifically, we consider the
case of polaritonic excitations in a non-ideal two-sublattice
tunnel-coupled microcavity systemwith embedded quantum
dots as well as the case of exciton-like excitations in the
system of quantum-dot-free cavities. Our results contribute
to the modeling of the new class of functional materials,
namely the so-called polaritonic systems (microcavity
arrays with embedded quantum dots) where controlling of
propagation of electromagnetic excitations is accomplished
by an appropriate introduction of structural defects.
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