Tuning Mid-IR Plasmon-Phonon Coupling on Graphene/Metamaterial Platform

This work presents a new tunable plasmonicplatform on which the metamaterial resonance is coupled with infraredvibrational bond in the presence of graphene electrostatic modulation. Thegraphene electrostatic modulation based... [ view full abstract ]

This work presents a new tunable plasmonicplatform on which the metamaterial resonance is coupled with infraredvibrational bond in the presence of graphene electrostatic modulation. Thegraphene electrostatic modulation based on the parallel-plate capacitorconfiguration enables the wavelength shift of 1.57 nm/V, resonance intensityand Q-factor modulation depth of 103.34% and 70%, respectively. Metamaterialbased plasmon polariton perfectly matched with phonon mode yields the highestQ-factor. However, this perfectly-matched resonance appears to be prohibitively“switched off” in the electrostatic tuning, which is reported for the firsttime.