Propagation of light through an amplifying honeycomb photonic lattice

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2020-10-07

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en

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5

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Physical Review A, Volume 102, issue 4

Abstract

We consider light propagation through a ballistic amplifying photonic honeycomb lattice below the lasing threshold. Two sublattices of the system are formed by waveguides with different complex dielectric permittivities, which results in the non-Hermitian Dirac equation for electromagnetic fields. We reveal that there exists a critical length of the amplifying region for which the photonic lattice exhibits an amplifier-to-generator transition. The transmission and reflection probabilities at the normal angle of incidence are strongly enhanced at a critical length of the system. We also comment on the sensitivity of amplification to the direction of incident light and the thickness of the amplifying region.

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Islam, S F, Simon, P & Zyuzin, A A 2020, ' Propagation of light through an amplifying honeycomb photonic lattice ', Physical Review A, vol. 102, no. 4, 043504 . https://doi.org/10.1103/PhysRevA.102.043504