Fig. 3: Enhanced THG in tBLG via resonantly increased linear optical conductivity.
From: Enhanced third-harmonic generation by manipulating the twist angle of bilayer graphene
a Schematic of the energy band diagram of tBLG when the energy gap of the VHS matches the three-photon energy of the incident light. b Resonantly increased linear optical conductivity in tBLG with a twist angle of 12.06° calculated by the continuum model method. Inset: schematic of Moiré superlattices formed at the interface of tBLG with a twist angle of 12.06°. c Joint density of states of tBLG for different twist angles between 9.5° and 14°. The three peaks are denoted by the three arrows in (a)
