Coherent perfect absorption (CPA) describes the absence of all outgoing modes from a lossy resonator, driven by lossless incoming modes. Here, we show that for nanoresonators that also exhibit radiative losses, e.g., plasmonic nanoantennas, a generalized version of CPA (gCPA) can be applied. In gCPA outgoing modes are suppressed only for a subset of (guided plasmonic) modes while other (radiative) modes are treated as additional loss channels - a situation typically referred to as perfect impedance matching. Here we make use of gCPA to show how to achieve perfect impedance matching between a single nanowire plasmonic waveguide and a plasmonic nanoantenna. Antennas with both radiant and subradiant characteristics are considered. We further demonstrate potential applications in background-free sensing.
arXiv.org Snapshot:C\:\\Users\\scherzad\\Zotero\\storage\\43EGM2EG\\1907.html:text/html;Huang et al. - 2019 - Nanoscale ultrasensing using a nonbonding plasmon .pdf:C\:\\Users\\scherzad\\Zotero\\storage\\G8FSQZ6M\\Huang et al. - 2019 - Nanoscale ultrasensing using a nonbonding plasmon .pdf:application/pdf
%0 Journal Article
%1 grimm2020driving
%A Grimm, Philipp
%A Razinskas, Gary
%A Huang, Jer-Shing
%A Hecht, Bert
%D 2021
%J nanoph-2021-0048
%K experiment nano-optics plasmon resonance
%R 10.1515/nanoph-2021-0048
%T Driving plasmonic nanoantennas at perfect impedance matching using generalized coherent perfect absorption
%U https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0048/html
%X Coherent perfect absorption (CPA) describes the absence of all outgoing modes from a lossy resonator, driven by lossless incoming modes. Here, we show that for nanoresonators that also exhibit radiative losses, e.g., plasmonic nanoantennas, a generalized version of CPA (gCPA) can be applied. In gCPA outgoing modes are suppressed only for a subset of (guided plasmonic) modes while other (radiative) modes are treated as additional loss channels - a situation typically referred to as perfect impedance matching. Here we make use of gCPA to show how to achieve perfect impedance matching between a single nanowire plasmonic waveguide and a plasmonic nanoantenna. Antennas with both radiant and subradiant characteristics are considered. We further demonstrate potential applications in background-free sensing.
@article{grimm2020driving,
abstract = {Coherent perfect absorption (CPA) describes the absence of all outgoing modes from a lossy resonator, driven by lossless incoming modes. Here, we show that for nanoresonators that also exhibit radiative losses, e.g., plasmonic nanoantennas, a generalized version of CPA (gCPA) can be applied. In gCPA outgoing modes are suppressed only for a subset of (guided plasmonic) modes while other (radiative) modes are treated as additional loss channels - a situation typically referred to as perfect impedance matching. Here we make use of gCPA to show how to achieve perfect impedance matching between a single nanowire plasmonic waveguide and a plasmonic nanoantenna. Antennas with both radiant and subradiant characteristics are considered. We further demonstrate potential applications in background-free sensing.},
added-at = {2020-02-24T12:55:00.000+0100},
author = {Grimm, Philipp and Razinskas, Gary and Huang, Jer-Shing and Hecht, Bert},
biburl = {https://www.bibsonomy.org/bibtex/2c91ce48162c230a2df60f6f8a00ef5c4/ep5optics},
day = 26,
doi = {10.1515/nanoph-2021-0048},
file = {arXiv.org Snapshot:C\:\\Users\\scherzad\\Zotero\\storage\\43EGM2EG\\1907.html:text/html;Huang et al. - 2019 - Nanoscale ultrasensing using a nonbonding plasmon .pdf:C\:\\Users\\scherzad\\Zotero\\storage\\G8FSQZ6M\\Huang et al. - 2019 - Nanoscale ultrasensing using a nonbonding plasmon .pdf:application/pdf},
interhash = {8bb8611eec965d77ec42c460ce89536d},
intrahash = {c91ce48162c230a2df60f6f8a00ef5c4},
journal = {nanoph-2021-0048},
keywords = {experiment nano-optics plasmon resonance},
month = {04},
note = {<a href="https://arxiv.org/abs/1907.08174" style="font-style: normal;">» arXiv: 1907.08174 (2020)</a>},
timestamp = {2021-08-02T13:13:17.000+0200},
title = {Driving plasmonic nanoantennas at perfect impedance matching using generalized coherent perfect absorption},
url = {https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0048/html},
urldate = {2020-02-24},
year = 2021
}