Title :
7.5% optical-to-terahertz conversion efficiency through use of three-dimensional plasmonic electrodes
Author :
Shang-Hua Yang ; Hashemi, Mohammed R. ; Berry, Christopher W. ; Jarrahi, Mona
Author_Institution :
Electr. Eng. & Comput. Sci. Dept., Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
We present a high-efficiency photoconductive terahertz source based on high-aspect ratio plasmonic contact electrodes. Terahertz radiation powers up to 105 μW are obtained at an optical pump power of 1.4 mW, exhibiting a record-high optical-to-terahertz conversion efficiency of 7.5%.
Keywords :
light sources; microwave photonics; optical pumping; photoconducting devices; plasmonics; terahertz wave devices; high-aspect ratio plasmonic contact electrodes; high-efficiency photoconductive terahertz source; optical pump power; optical-to-terahertz conversion efficiency; power 1.4 mW; three-dimensional plasmonic electrodes; Electrodes; Optical device fabrication; Optical imaging; Optical polarization; Optical pumping; Plasmons; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
