Title :
Three-dimensional plasmonic contact electrodes for high-efficiency photoconductive terahertz sources
Author :
Shang-Hua Yang ; Hashemi, Mohammed R. ; Berry, Christopher W. ; Jarrahi, Mona
Author_Institution :
Electr. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
We present a high-efficiency photoconductive terahertz source based on three-dimensional plasmonic contact electrodes. We experimentally demonstrate 105 μW broadband terahertz radiation in 0.1-2 THz frequency range in response to a 1.4 mW optical pump, exhibiting a record-high optical-to-terahertz conversion efficiency of 7.5%.
Keywords :
electrodes; light sources; optical pumping; photoconducting devices; plasmonics; terahertz wave devices; terahertz wave generation; 3D plasmonic contact electrodes; frequency 0.1 THz to 2 THz; high-efficiency photoconductive terahertz sources; optical pump; optical-to-terahertz conversion efficiency; power 1.4 mW; power 105 muW; Electrodes; Gratings; Optical device fabrication; Optical pulses; Optical pumping; Optical recording; Plasmons;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956235
