Tunable Low-Threshold Optical Bistability in Optical Tamm Plasmon Superlattices

We propose a scheme to obtain tunable low-threshold optical bistability of reflected beams in Tamm plasmon superlattices (TPS). The is triggered due the strong third-order non-linearity graphene and local field enhancement TPS. Our results show that have ability lower bistable threshold even further than single state. hysteresis behavior can be continuously adjusted by changing applied voltage number layers (N ≤ 4). In particular, TPS affected incident angle. introduce new possible route for low THz range provide method all-optical switching applications.