Optical bistability and multistability via double dark resonance in graphene nanostructure
Hossein Asadpour Seyyed†, , Solookinejad G, Panahi M, Ahmadi Sangachin E
       

Plots of output filed versus input field for different values of (a) RHC field and (b) detuning of RHC field. The selected parameters are γ2 = 3 × 1013 s−1, γ4 = γ3 = γ2, Δp = 0, Δ3 = 0, N ≃ 5 × 1012 cm−2, L = 90 nm, and εr ≃ 4.5.