Hybrid Metameterials Enable Fast Electrical Modulation Of Freely Propagating Terahertz Waves

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Applied Physics Letters

OSTI ID:957762

Chen, Hou-tong ^[1]; O' Hara, John F ^[1]; Taylor, Antoinette J ^[1]

---

1. Los Alamos National Laboratory

We demonstrate fast electrical modulation of freely propagating THz waves at room temperature using hybrid metamaterial devices. the devices are planar metamaterials fabricated on doped semiconducor epitaxial layers, which form hybrid metamaterial - Schottky diode structures. With an applied ac voltage bias, we show modulation of THz 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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 957762
• Report Number(s): LA-UR-08-04538; LA-UR-08-4538; APPLAB; TRN: US201016%%167
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CAPACITANCE
MODULATION
RADIATIONS
VELOCITY