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arXiv · 1802.00282

Nonlinear and anisotropic polarization rotation in two dimensional Dirac materials

Ashutosh Singh·Saikat Ghosh·Amit Agarwal
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Abstract

We predict nonlinear optical polarization rotation in two dimensional massless Dirac systems including graphene and 8-$Pmmn$ borophene. When illuminated, a continuous wave optical field leads to a nonlinear steady state of photo-excited carriers in the medium. The photo-excited population inversion and the inter-band coherence gives rise to a finite transverse optical conductivity, $σ_{xy} (ω)$. This in turn leads to definitive signatures in associated Kerr and Faraday polarization rotation, which are measurable in a realistic experimental scenario.

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Ashutosh Singh, Saikat Ghosh, Amit Agarwal. 2018-02-01. Nonlinear and anisotropic polarization rotation in two dimensional Dirac materials. https://doi.org/10.1103/physrevb.97.205420

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