Title :
An electrically driven terahertz modulator with over 20 dB of dynamic range
Author :
Karl, N. ; Reichel, K. ; Chen, Hua-Tsung ; Taylor, Antoinette J. ; Brener, Igal ; Benz, Alexander ; Reno, John ; Mendis, Rajind ; Mittleman, Daniel M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Abstract :
We design and test a switchable diffraction grating based on active metamaterials for terahertz modulation. We observe off-axis diffraction which permits operation of the device as a high-contrast modulator, with better than 20 dB of dynamic range.
Keywords :
diffraction gratings; metamaterials; optical design techniques; optical testing; submillimetre wave detectors; active metamaterials; dynamic range; electrically driven terahertz modulator; optical design; optical testing; switchable diffraction grating; Arrays; Diffraction; Dynamic range; Frequency modulation; Metamaterials; Resonant frequency;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665929
