X.G. Peralta , I. Brener , W.J. Padilla , E.W. Young , A.J. Hoffman , M.J. Cich , R.D. Averitt , M.C. Wanke , J.B. Wright , H.-T. Chen , J.F. O’Hara , A.J. Taylor , J. Waldman , W.D. Goodhue , J. Li , J. Reno
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引用次数: 17
Abstract
We have designed, fabricated and measured electrically-driven active metamaterials which operate as external modulators for TeraHertz Quantum Cascade Lasers. The modulation is achieved by applying a voltage to the metamaterial layer which actively displaces carriers from the n-doped layer causing changes in damping and frequency location of the lowest metamaterial response. We demonstrate their operation at 2.4 and 2.8 TeraHertz and obtain a maximum modulation depth of ∼60% with a large degree of modulation linearity.
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