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Conferences > CLEO_QELS > 2013 > QTu1D > QTu1D.5

Ultrafast refractive index control of gate-controlled graphene-metamaterial hybrid devices

Jeongmook Choi, Seung Hoon Lee, Hyeon-Don Kim, Bumki Min, and Hyunyong Choi

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Abstract

We present an ultrafast dynamics of THz graphene-metamaterial hybrid devices, where the refractive index and the conductivity are largely modulated by electrical and optical methods. Unprecedentedly large modulation of refractive index and the pump-induced negative conductivity are investigated by an ultrafast time-resolved optical-pump THz-probe spectroscopy with varying gate voltage.

© 2013 Optical Society of America

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