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Dispersion of Exciton Polaritons in Terbium Nitrate Hexahydrate

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Abstract

The dispersion relations of exciton polariton waves in terbium nitrate hexahydrate are determined based on the model of the interaction of electromagnetic waves with resonant electronic states of Tb3+ ions at the 5D4–7F6 transition. Frequencies of unitary polaritons characterized by refractive indices equal to unity are determined. It is shown that the group velocity of electromagnetic waves in the region of unitary polaritons is lower than the speed of light in vacuum by several orders of magnitude. A sharp increase in the efficiency of photoluminescence and Raman scattering is predicted in the case where the excitation radiation frequency approaches the unitary polaritons frequency.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia

    V. S. Gorelik

  2. Bauman Moscow State Technical University, Vtoraya Baumanskaya ul. 5, str. 1, Moscow, 105005, Russia

    V. S. Gorelik & V. E. Ulitko

Authors
  1. V. S. Gorelik
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  2. V. E. Ulitko
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Correspondence to V. S. Gorelik.

Additional information

Original Russian Text © V.S. Gorelik, V.E. Ulitko, 2018, published in Kratkie Soobshcheniya po Fizike, 2018, Vol. 45, No. 4, pp. 11–18.

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Gorelik, V.S., Ulitko, V.E. Dispersion of Exciton Polaritons in Terbium Nitrate Hexahydrate. Bull. Lebedev Phys. Inst. 45, 103–107 (2018). https://doi.org/10.3103/S1068335618040024

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  • DOI: https://doi.org/10.3103/S1068335618040024

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