Dispersion law of exciton polaritons in MQW based photonic crystals

M. V. Erementchouk

doi:10.1117/12.618541

15 September 2005 Dispersion law of exciton polaritons in MQW based photonic crystals

M. V. Erementchouk

Proceedings Volume 5924, Complex Mediums VI: Light and Complexity; 59240R (2005) https://doi.org/10.1117/12.618541
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The exciton polaritons dispersion law is analyzed in a one-dimensional multiple-quantum-well based photonic crystal. An effective approach allowing to consider structures with an arbitrary periodic spatial modulation of the dielectric function and the multilevel structure of the exciton spectrum is developed. It is shown that the condition of the Bragg resonance has to be modified to take into account the symmetry of the exciton states and the non-trivial dispersion law of the electromagnetic waves in photonic crystals. For a particular case of a one-level excitonic susceptibility it is shown that the Bragg resonance occurs when the exciton frequency falls to the high-frequency boundary of the photonic band-gap. The polariton's dispersion law is considered. The angular dependence of the spectrum is analyzed. The effect of multiple exciton levels on the polariton spectrum is discussed.

Citation Download Citation

M. V. Erementchouk "Dispersion law of exciton polaritons in MQW based photonic crystals", Proc. SPIE 5924, Complex Mediums VI: Light and Complexity, 59240R (15 September 2005); https://doi.org/10.1117/12.618541

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