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Hybrid photon–plasmon coupling and ultrafast control of nanoantennas on a silicon photonic chip

Hybrid photon–plasmon coupling and ultrafast control of nanoantennas on a silicon photonic chip
Hybrid photon–plasmon coupling and ultrafast control of nanoantennas on a silicon photonic chip
Hybrid integration of nanoplasmonic devices with silicon photonic circuits holds promise for a range of applications in on-chip sensing, field-enhanced and nonlinear spectroscopy, and integrated nanophotonic switches. Here, we demonstrate a new regime of photon–plasmon coupling by combining a silicon photonic resonator with plasmonic nanoantennas. Using principles from coherent perfect absorption, we make use of standing-wave light fields to maximize the photon–plasmon interaction strength. Precise placement of the broadband antennas with respect to the narrowband photonic racetrack modes results in controlled hybridization of only a subset of these modes. By combining antennas into groups of radiating dipoles with opposite phase, far-field scattering is effectively suppressed. We achieve ultrafast tuning of photon–plasmon hybridization including reconfigurable routing of the standing-wave input between two output ports. Hybrid photonic–plasmonic resonators provide conceptually new approaches for on-chip integrated nanophotonic devices.
1530-6984
Chen, Bigeng
e533448b-095e-4a9f-924c-301f4aa3007b
Bruck, Roman
6c0a8401-0a93-4497-bd42-665e5530cfcf
Traviss, Daniel
eb9f6403-d646-42a6-8653-44f4147fd47b
Khokhar, Ali Z.
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Reynolds, Scott
79120bae-f620-433a-9360-71973dbc4222
Thomson, David J.
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Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Chen, Bigeng
e533448b-095e-4a9f-924c-301f4aa3007b
Bruck, Roman
6c0a8401-0a93-4497-bd42-665e5530cfcf
Traviss, Daniel
eb9f6403-d646-42a6-8653-44f4147fd47b
Khokhar, Ali Z.
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Reynolds, Scott
79120bae-f620-433a-9360-71973dbc4222
Thomson, David J.
17c1626c-2422-42c6-98e0-586ae220bcda
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9

Chen, Bigeng, Bruck, Roman, Traviss, Daniel, Khokhar, Ali Z., Reynolds, Scott, Thomson, David J., Mashanovich, Goran Z., Reed, Graham T. and Muskens, Otto L. (2017) Hybrid photon–plasmon coupling and ultrafast control of nanoantennas on a silicon photonic chip. Nano Letters, 18 (1). (doi:10.1021/acs.nanolett.7b04861).

Record type: Article

Abstract

Hybrid integration of nanoplasmonic devices with silicon photonic circuits holds promise for a range of applications in on-chip sensing, field-enhanced and nonlinear spectroscopy, and integrated nanophotonic switches. Here, we demonstrate a new regime of photon–plasmon coupling by combining a silicon photonic resonator with plasmonic nanoantennas. Using principles from coherent perfect absorption, we make use of standing-wave light fields to maximize the photon–plasmon interaction strength. Precise placement of the broadband antennas with respect to the narrowband photonic racetrack modes results in controlled hybridization of only a subset of these modes. By combining antennas into groups of radiating dipoles with opposite phase, far-field scattering is effectively suppressed. We achieve ultrafast tuning of photon–plasmon hybridization including reconfigurable routing of the standing-wave input between two output ports. Hybrid photonic–plasmonic resonators provide conceptually new approaches for on-chip integrated nanophotonic devices.

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More information

Accepted/In Press date: 22 December 2017
e-pub ahead of print date: 22 December 2017
Published date: 29 December 2017

Identifiers

Local EPrints ID: 416897
URI: https://eprints.soton.ac.uk/id/eprint/416897
ISSN: 1530-6984
PURE UUID: be82a06f-7e46-4baf-a723-923d73f1de75
ORCID for Bigeng Chen: ORCID iD orcid.org/0000-0003-4925-2308
ORCID for Otto L. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

Catalogue record

Date deposited: 12 Jan 2018 17:30
Last modified: 10 Dec 2019 05:38

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