Terahertz Radiation Enhancement through Use of Plasmonic Photomixers

被引:0
|
作者
Berry, C. W. [1 ]
Hashemi, M. R. [1 ,2 ]
Jarrahi, M. [1 ,2 ]
Preu, S. [3 ]
Lu, H. [4 ]
Gossard, A. C. [4 ]
机构
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA
[2] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA
[3] Univ Erlangen Nurnberg, Chair Appl Phys, D-91058 Erlangen, Germany
[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
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中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We demonstrate significant enhancement in terahertz radiation power from a photomixer that incorporates plasmonic contact electrodes. The plasmonic contact electrodes reduce the average transport path of photocarriers to the contact electrodes, increasing the ultrafast photocurrent that drives the terahertz antenna. We experimentally demonstrate an order of magnitude higher radiated power from a photomixer with plasmonic contact electrodes in comparison with an analogous photomixer without plasmonic contact electrodes in the 0.25-2.5 THz frequency range.
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页码:1604 / 1605
页数:2
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