Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves

被引：127

作者：

Chen, Hou-Tong ^{[1
]}

Palit, Sabarni ^{[2
]}

Tyler, Talmage ^{[2
]}

Bingham, Christopher M. ^{[3
]}

Zide, Joshua M. O. ^{[4
]}

O'Hara, John F. ^{[1
]}

Smith, David R. ^{[2
]}

Gossard, Arthur C. ^{[4
]}

Averitt, Richard D. ^{[5
]}

Padilla, Willie J. ^{[3
]}

Jokerst, Nan M. ^{[2
]}

Taylor, Antoinette J. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, MPA CINT, MS K771, Los Alamos, NM 87545 USA

[2] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

[3] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA

[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[5] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 09期

关键词：

D O I：

10.1063/1.2978071

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：3

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