Analysis of terahertz generation via nanostructure enhanced plasmonic excitations

Yaohui Gao; Meng Ku Chen; Chia En Yang; Yun Ching Chang; Stuart Yin; Rongqing Hui; Paul Ruffin; Christina Brantley; Eugene Edwards; Claire Luo

doi:10.1063/1.3236629

Analysis of terahertz generation via nanostructure enhanced plasmonic excitations

Yaohui Gao, Meng Ku Chen, Chia En Yang, Yun Ching Chang, Stuart Yin, Rongqing Hui, Paul Ruffin, Christina Brantley, Eugene Edwards, Claire Luo

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

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.

Original language	English (US)
Article number	074302
Journal	Journal of Applied Physics
Volume	106
Issue number	7
DOIs	https://doi.org/10.1063/1.3236629
State	Published - 2009

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.3236629

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title = "Analysis of terahertz generation via nanostructure enhanced plasmonic excitations",

abstract = "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.",

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AU - Gao, Yaohui

AU - Chen, Meng Ku

AU - Yang, Chia En

AU - Chang, Yun Ching

AU - Yin, Stuart

AU - Hui, Rongqing

AU - Ruffin, Paul

AU - Brantley, Christina

AU - Edwards, Eugene

AU - Luo, Claire

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

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Analysis of terahertz generation via nanostructure enhanced plasmonic excitations

Abstract

All Science Journal Classification (ASJC) codes

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