Analysis of terahertz generation via nanostructure enhanced plasmonic excitations

Analysis of terahertz generation via nanostructure enhanced plasmonic excitations

In this paper, we conduct a quantitative study on the physical mechanism of electrons dynamics near the nanostructured metal film surfaces, as well as the efficiency of generated terahertz radiation associated with different types of nanostructures. The simulation results show that although the osci...

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Veröffentlicht in:Journal of applied physics 2009-10, Vol.106 (7), p.074302-074302-7
Hauptverfasser: Gao, Yaohui, Chen, Meng-Ku, Yang, Chia-En, Chang, Yun-Ching, Yin, Stuart, Hui, Rongqing, Ruffin, Paul, Brantley, Christina, Edwards, Eugene, Luo, Claire
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container_end_page 074302-7
container_issue 7
container_start_page 074302
container_title Journal of applied physics
container_volume 106
creator Gao, Yaohui
Chen, Meng-Ku
Yang, Chia-En
Chang, Yun-Ching
Yin, Stuart
Hui, Rongqing
Ruffin, Paul
Brantley, Christina
Edwards, Eugene
Luo, Claire
description In this paper, we conduct a quantitative study on the physical mechanism of electrons dynamics near the nanostructured metal film surfaces, as well as the efficiency of generated terahertz radiation associated with different types of nanostructures. The simulation results show that although the oscillating motion of emitted electrons outside the metal surface may affect the terahertz generation efficiency to some extent, this efficiency is predominantly determined by the electric field magnitude inside the metal film associated with nanostructure enhanced plasmonic excitations. Due to the field enhancement effect of the nanostructure, an appropriately designed nanostructured surface could greatly enhance the strength of generated terahertz signal via the increased nonlinear interactions between the light and the nanostructures.
doi_str_mv 10.1063/1.3236629
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title Analysis of terahertz generation via nanostructure enhanced plasmonic excitations
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