Terahertz radiation enhancement in dipole photoconductive antenna on LT-GaAs using a gold plasmonic nanodisk array

Mohammad Bashirpour; Jafar Poursafar; Mohammadreza Kolahdouz; Mohsen Hajari; Matin Forouzmehr; Mohammad Neshat; Hamid Hajihoseini; Morteza Fathipour; Zahra Kolahdouz; Guoqi Zhang

doi:10.1016/j.optlastec.2019.105726

Terahertz radiation enhancement in dipole photoconductive antenna on LT-GaAs using a gold plasmonic nanodisk array

Mohammad Bashirpour, Jafar Poursafar, Mohammadreza Kolahdouz, Mohsen Hajari, Matin Forouzmehr, Mohammad Neshat, Hamid Hajihoseini, Morteza Fathipour, Zahra Kolahdouz, Guoqi Zhang

Tutkimustuotos: Artikkeli › Tieteellinen › vertaisarvioitu

27 Sitaatiot (Scopus)

Abstrakti

This study proposes a new-fashioned plasmonic photoconductive antenna (PCA) with high optical-to-terahertz (THz) conversion efficiency. Finite element method was used to investigate and optimize the interaction of 800 nm femtosecond laser with the designed nanodisk array in the antenna’s gap using its geometrical parameters. According to the simulation results, our optimized nanoplasmonic structure showed more than 38% enhancement in the absorption efficiency compared to the conventional structure without any nanostructure. Measuring the THz radiation of the fabricated PCAs using a time domain spectroscopy setup exhibited an exceptional 5.6 times higher electric field in 0.1–2.5 THz range compared to a similar PCA but without nanoplasmonic structure.

Alkuperäiskieli	Englanti
Artikkeli	105726
Sivumäärä	1
Julkaisu	Optics and laser technology
Vuosikerta	120
DOI - pysyväislinkit	https://doi.org/10.1016/j.optlastec.2019.105726
Tila	Julkaistu - 2019
Julkaistu ulkoisesti	Kyllä
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Pääsy asiakirjaan

10.1016/j.optlastec.2019.105726

https://www.sciencedirect.com/science/article/pii/S0030399219308904

Siteeraa tätä

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title = "Terahertz radiation enhancement in dipole photoconductive antenna on LT-GaAs using a gold plasmonic nanodisk array",

abstract = "This study proposes a new-fashioned plasmonic photoconductive antenna (PCA) with high optical-to-terahertz (THz) conversion efficiency. Finite element method was used to investigate and optimize the interaction of 800 nm femtosecond laser with the designed nanodisk array in the antenna{\textquoteright}s gap using its geometrical parameters. According to the simulation results, our optimized nanoplasmonic structure showed more than 38% enhancement in the absorption efficiency compared to the conventional structure without any nanostructure. Measuring the THz radiation of the fabricated PCAs using a time domain spectroscopy setup exhibited an exceptional 5.6 times higher electric field in 0.1–2.5 THz range compared to a similar PCA but without nanoplasmonic structure.",

author = "Mohammad Bashirpour and Jafar Poursafar and Mohammadreza Kolahdouz and Mohsen Hajari and Matin Forouzmehr and Mohammad Neshat and Hamid Hajihoseini and Morteza Fathipour and Zahra Kolahdouz and Guoqi Zhang",

year = "2019",

doi = "10.1016/j.optlastec.2019.105726",

language = "English",

volume = "120",

journal = "Optics and laser technology",

issn = "0030-3992",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Terahertz radiation enhancement in dipole photoconductive antenna on LT-GaAs using a gold plasmonic nanodisk array

AU - Bashirpour, Mohammad

AU - Poursafar, Jafar

AU - Kolahdouz, Mohammadreza

AU - Hajari, Mohsen

AU - Forouzmehr, Matin

AU - Neshat, Mohammad

AU - Hajihoseini, Hamid

AU - Fathipour, Morteza

AU - Kolahdouz, Zahra

AU - Zhang, Guoqi

PY - 2019

Y1 - 2019

N2 - This study proposes a new-fashioned plasmonic photoconductive antenna (PCA) with high optical-to-terahertz (THz) conversion efficiency. Finite element method was used to investigate and optimize the interaction of 800 nm femtosecond laser with the designed nanodisk array in the antenna’s gap using its geometrical parameters. According to the simulation results, our optimized nanoplasmonic structure showed more than 38% enhancement in the absorption efficiency compared to the conventional structure without any nanostructure. Measuring the THz radiation of the fabricated PCAs using a time domain spectroscopy setup exhibited an exceptional 5.6 times higher electric field in 0.1–2.5 THz range compared to a similar PCA but without nanoplasmonic structure.

AB - This study proposes a new-fashioned plasmonic photoconductive antenna (PCA) with high optical-to-terahertz (THz) conversion efficiency. Finite element method was used to investigate and optimize the interaction of 800 nm femtosecond laser with the designed nanodisk array in the antenna’s gap using its geometrical parameters. According to the simulation results, our optimized nanoplasmonic structure showed more than 38% enhancement in the absorption efficiency compared to the conventional structure without any nanostructure. Measuring the THz radiation of the fabricated PCAs using a time domain spectroscopy setup exhibited an exceptional 5.6 times higher electric field in 0.1–2.5 THz range compared to a similar PCA but without nanoplasmonic structure.

U2 - 10.1016/j.optlastec.2019.105726

DO - 10.1016/j.optlastec.2019.105726

M3 - Article

SN - 0030-3992

VL - 120

JO - Optics and laser technology

JF - Optics and laser technology

M1 - 105726

ER -

Terahertz radiation enhancement in dipole photoconductive antenna on LT-GaAs using a gold plasmonic nanodisk array

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