Abstract
A proposal on optical bistability at ultralow switching threshold and lower Fermi-level of graphene around 2 THz is implemented analytically through the proposed long-range surface plasmon resonance configuration by employing local field enhancement effects owing to the excitation of a graphene symmetric mode within graphene sheets. Reported threshold intensity for the optical bistability to date is within the terahertz region and at near-IR range. Whereas the proposed scheme explores the possibility of reducing this threshold down to , this technique proffers potential applications in nanoillumination, optical memory, and all-optical switching at an ultra-low threshold.
© 2017 Optical Society of America
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