Peculiarities of Band Gap Width Dependence Upon Concentration of Admixtures Randomly Included in 1D Photonic Crystal

V.V. Rumyantsev, S.A. Fedorov and K.V. Gumennyk
Galkin Donetsk Institute for Physics and Engineering, National Academy of Sciences, Ukraine

Series: Materials Science and Technologies
BISAC: TEC021000

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Volume 10

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Special issue: Resilience in breaking the cycle of children’s environmental health disparities
Edited by I Leslie Rubin, Robert J Geller, Abby Mutic, Benjamin A Gitterman, Nathan Mutic, Wayne Garfinkel, Claire D Coles, Kurt Martinuzzi, and Joav Merrick

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1D photonic crystalline superlattice is modeled as both a layered crystal and striped thin film. These 1D systems are sets of elements (layers or strips) with randomly included extrinsic (with respect to the ideal superlattices) elements (layers or strips) of a variable thickness or composition. The photon modes spectrum of a non-ideal superlattice with an arbitrary number of layers (strips) per elementary cell, obtained within the virtual crystal approximation, is concretized for the Si – diamond layered system, Si-liquid crystal and Si/SiO2/GaAs striped film. Dependence of the band gap width upon concentration of admixture elements and refractive index peculiarities is analyzed. The study carried out shows that optical characteristics of the nonideal photonic crystals may vary due to transformation of its photon modes spectrum caused by the presence of admixture elements (layers or strips). (Imprint: Nova)

ABSTRACT

INTRODUCTION

PROPAGATION OF ELECTROMAGNETIC WAVES IN INHOMOGENEOUS STRUCTURES

DEPENDENCE OF THE POLARITON SPECTRUM ON THE CONCENTRATION OF IMPURITY LAYERS IN A NONIDEAL SUPERLATTICE

PROPAGATION OF ELECTROMAGNETIC EXCITATION IN IMPERFECT QUASI-TWO-DIMENSIONAL PHOTONIC 1D CRYSTAL

CONCLUSION

REFERENCES

INDEX

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