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J Phys Condens Matter. 2008 Sep 24;20(38):384208. doi: 10.1088/0953-8984/20/38/384208. Epub 2008 Aug 21.

Plasma wave instability and amplification of terahertz radiation in field-effect-transistor arrays.

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Institute of Radio Engineering and Electronics (Saratov Branch), Russian Academy of Sciences, 410019 Saratov, Russia.


We show that the strong amplification of terahertz radiation takes place in an array of field-effect transistors at small DC drain currents due to hydrodynamic plasmon instability of the collective plasmon mode. Planar designs compatible with standard integrated circuit fabrication processes and strong coupling of terahertz radiation to plasmon modes in FET arrays make such arrays very attractive for potential applications in solid-state terahertz amplifiers and emitters.

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