Publications [#150510] of David R. Smith
- H. T. Chen and S. Palit and T. Tyler and C. M. Bingham and J. M. O. Zide and J. F. O'hara and D. R. Smith and A. C. Gossard and R. D. Averitt and W. J. Padilla and N. M. Jokerst and A. J. Taylor, Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves,
Applied Physics Letters, vol. 93 no. 9
(September, 2008), ISSN 0003-6951
(last updated on 2008/10/16)
We demonstrate fast electrical modulation of freely propagating terahertz waves at room temperature using hybrid metamaterial devices. The devices are planar metamaterials fabricated on doped semiconductor epitaxial layers, which form hybrid metamaterial-Schottky diode structures. With an applied ac voltage bias, we show modulation of terahertz radiation at inferred frequencies over 2 MHz. The modulation speed is limited by the device depletion capacitance which may be reduced for even faster operation. (c) 2008 American Institute of Physics.