7.5% optical-to-terahertz conversion efficiency through use of three-dimensional plasmonic electrodes

Shang-Hua Yang,Hashemi, M.R.,Berry, C.W.,Jarrahi, M.

Lasers and Electro-Optics（2014）

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摘要

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%.

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关键词

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,optical imaging,electrodes,plasmons

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