A polarization-insensitive plasmonic photoconductive terahertz emitter

Xurong Li; Nezih Tolga Yardimci; Mona Jarrahi

doi:10.1063/1.5006273

A polarization-insensitive plasmonic photoconductive terahertz emitter

Xurong Li, Nezih Tolga Yardimci, Mona Jarrahi

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

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Abstract

We present a polarization-insensitive plasmonic photoconductive terahertz emitter that uses a two-dimensional array of nanoscale cross-shaped apertures as the plasmonic contact electrodes. The geometry of the cross-shaped apertures is set to maximize optical pump absorption in close proximity to the contact electrodes. The two-dimensional symmetry of the cross-shaped apertures offers a polarization-insensitive interaction between the plasmonic contact electrodes and optical pump beam. We experimentally demonstrate a polarization-insensitive terahertz radiation from the presented emitter in response to a femtosecond optical pump beam and similar terahertz radiation powers compared to previously demonstrated polarization-sensitive photoconductive emitters with plasmonic contact electrode gratings at the optimum optical pump polarization.

Original language	English (US)
Pages (from-to)	115113
Journal	AIP Advances
Volume	7
Issue number	11
DOIs	https://doi.org/10.1063/1.5006273
State	Published - Nov 16 2017
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge the financial support from Moore Inventor Fellowship, National Institutes of Health (#1R01GM112693-01A1), and King Abdullah University of Science and Technology Competitive Research Grant.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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10.1063/1.5006273

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title = "A polarization-insensitive plasmonic photoconductive terahertz emitter",

abstract = "We present a polarization-insensitive plasmonic photoconductive terahertz emitter that uses a two-dimensional array of nanoscale cross-shaped apertures as the plasmonic contact electrodes. The geometry of the cross-shaped apertures is set to maximize optical pump absorption in close proximity to the contact electrodes. The two-dimensional symmetry of the cross-shaped apertures offers a polarization-insensitive interaction between the plasmonic contact electrodes and optical pump beam. We experimentally demonstrate a polarization-insensitive terahertz radiation from the presented emitter in response to a femtosecond optical pump beam and similar terahertz radiation powers compared to previously demonstrated polarization-sensitive photoconductive emitters with plasmonic contact electrode gratings at the optimum optical pump polarization.",

author = "Xurong Li and Yardimci, {Nezih Tolga} and Mona Jarrahi",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully acknowledge the financial support from Moore Inventor Fellowship, National Institutes of Health (#1R01GM112693-01A1), and King Abdullah University of Science and Technology Competitive Research Grant. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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doi = "10.1063/1.5006273",

language = "English (US)",

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T1 - A polarization-insensitive plasmonic photoconductive terahertz emitter

AU - Li, Xurong

AU - Yardimci, Nezih Tolga

AU - Jarrahi, Mona

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully acknowledge the financial support from Moore Inventor Fellowship, National Institutes of Health (#1R01GM112693-01A1), and King Abdullah University of Science and Technology Competitive Research Grant. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2017/11/16

Y1 - 2017/11/16

N2 - We present a polarization-insensitive plasmonic photoconductive terahertz emitter that uses a two-dimensional array of nanoscale cross-shaped apertures as the plasmonic contact electrodes. The geometry of the cross-shaped apertures is set to maximize optical pump absorption in close proximity to the contact electrodes. The two-dimensional symmetry of the cross-shaped apertures offers a polarization-insensitive interaction between the plasmonic contact electrodes and optical pump beam. We experimentally demonstrate a polarization-insensitive terahertz radiation from the presented emitter in response to a femtosecond optical pump beam and similar terahertz radiation powers compared to previously demonstrated polarization-sensitive photoconductive emitters with plasmonic contact electrode gratings at the optimum optical pump polarization.

AB - We present a polarization-insensitive plasmonic photoconductive terahertz emitter that uses a two-dimensional array of nanoscale cross-shaped apertures as the plasmonic contact electrodes. The geometry of the cross-shaped apertures is set to maximize optical pump absorption in close proximity to the contact electrodes. The two-dimensional symmetry of the cross-shaped apertures offers a polarization-insensitive interaction between the plasmonic contact electrodes and optical pump beam. We experimentally demonstrate a polarization-insensitive terahertz radiation from the presented emitter in response to a femtosecond optical pump beam and similar terahertz radiation powers compared to previously demonstrated polarization-sensitive photoconductive emitters with plasmonic contact electrode gratings at the optimum optical pump polarization.

UR - http://hdl.handle.net/10754/626671

UR - http://aip.scitation.org/doi/10.1063/1.5006273

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U2 - 10.1063/1.5006273

DO - 10.1063/1.5006273

M3 - Article

SN - 2158-3226

VL - 7

SP - 115113

JO - AIP Advances

JF - AIP Advances

IS - 11

ER -

A polarization-insensitive plasmonic photoconductive terahertz emitter

Abstract

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