Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN

Hou, Yaonan; Kappers, Menno; Jin, Chaoyuan; Oliver, Rachel

doi:10.1063/5.0094454

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Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN

Yaonan Hou, Menno Kappers, Chaoyuan Jin, Rachel Oliver

Applied Physics Letters, Volume: 120, Issue: 20, Start page: 424004

Swansea University Author: Yaonan Hou

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DOI (Published version): 10.1063/5.0094454

Abstract

We report a GaN based metal–semiconductor–metal (MSM) infrared photodetector enabled with azimuthally distributed sub-wavelength gratings fabricated on one of the working electrodes. Under illumination, hot electron transfer is introduced by the plasmonic resonance in the infrared waveband formed at...

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Published in:	Applied Physics Letters
ISSN:	0003-6951 1077-3118
Published:	AIP Publishing 2022
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa65280
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spelling	v2 65280 2023-12-14 Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN 113975f710084997abdb26ad5fa03e8e Yaonan Hou Yaonan Hou true false 2023-12-14 EEEG We report a GaN based metal–semiconductor–metal (MSM) infrared photodetector enabled with azimuthally distributed sub-wavelength gratings fabricated on one of the working electrodes. Under illumination, hot electron transfer is introduced by the plasmonic resonance in the infrared waveband formed at the interface of Au/GaN. Without the help of using any external optical polarizers, the device is able to detect radial polarization vortices in the form of photocurrents with a prescribed response spectrum. The detector exhibits a 10%–90% rise and fall time of 0.9 ms under modulated light, much faster than that of conventional ultraviolet GaN MSM photodetectors based on the band edge absorption. This work provides a viable way to measure spatially variant polarization beams with a compact plasmonic photodetectors fabricated from wide bandgap semiconductors. Journal Article Applied Physics Letters 120 20 424004 AIP Publishing 0003-6951 1077-3118 16 5 2022 2022-05-16 10.1063/5.0094454 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University Another institution paid the OA fee Y.H. and C.J. are grateful for the support by Research Stimulus Fund at the Zepler Institute for Photonics and Nanoelectronics, the University of Southampton. This work was partly supported by QUantum Dot On Silicon systems for communications, information processing and sensing (QUDOS) under the Grant No. EP/T028475/1 from Engineering and Physical Sciences Research Council (EPSRC), UK. Y.H., M.K., and R.O. appreciate the Pumppriming Program from EPSRC National Epitaxy Facility, UK. Y.H. specially thanks Dr. Nikitas Papasimkis and Professor Nikolay I. Zheludev from University of Southampton for helpful discussions. 2024-04-10T13:58:48.1207985 2023-12-14T15:47:31.1171011 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Yaonan Hou 1 Menno Kappers 2 Chaoyuan Jin 3 Rachel Oliver 0000-0003-0029-3993 4 65280__29977__0bbd40def2ed4a2f8ff84377706cf6a3.pdf 65280.VOR.pdf 2024-04-10T12:57:02.3898314 Output 1860814 application/pdf Version of Record true Copyright 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license. true eng http://creativecommons.org/licenses/by/4.0/
title	Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN
spellingShingle	Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN Yaonan Hou
title_short	Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN
title_full	Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN
title_fullStr	Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN
title_full_unstemmed	Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN
title_sort	Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN
author_id_str_mv	113975f710084997abdb26ad5fa03e8e
author_id_fullname_str_mv	113975f710084997abdb26ad5fa03e8e_***_Yaonan Hou
author	Yaonan Hou
author2	Yaonan Hou Menno Kappers Chaoyuan Jin Rachel Oliver
format	Journal article
container_title	Applied Physics Letters
container_volume	120
container_issue	20
container_start_page	424004
publishDate	2022
institution	Swansea University
issn	0003-6951 1077-3118
doi_str_mv	10.1063/5.0094454
publisher	AIP Publishing
college_str	Faculty of Science and Engineering
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hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str	1
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description	We report a GaN based metal–semiconductor–metal (MSM) infrared photodetector enabled with azimuthally distributed sub-wavelength gratings fabricated on one of the working electrodes. Under illumination, hot electron transfer is introduced by the plasmonic resonance in the infrared waveband formed at the interface of Au/GaN. Without the help of using any external optical polarizers, the device is able to detect radial polarization vortices in the form of photocurrents with a prescribed response spectrum. The detector exhibits a 10%–90% rise and fall time of 0.9 ms under modulated light, much faster than that of conventional ultraviolet GaN MSM photodetectors based on the band edge absorption. This work provides a viable way to measure spatially variant polarization beams with a compact plasmonic photodetectors fabricated from wide bandgap semiconductors.
published_date	2022-05-16T13:58:44Z
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score	11.012678

Photocurrent detection of radially polarized optical vortex with hot electrons in Au/GaN

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