Abstract
The ability to split an incident light beam into separate wavelength bands is central to a diverse set of optical applications, including imaging, biosensing, communication, photocatalysis, and photovoltaics. Entirely new opportunities are currently emerging with the recently demonstrated possibility to spectrally split light at a subwavelength scale with optical antennas. Unfortunately, such small structures offer limited spectral control and are hard to exploit in optoelectronic devices. Here, we overcome both challenges and demonstrate how within a single-layer metafilm one can laterally sort photons of different wavelengths below the free-space diffraction limit and extract a useful photocurrent. This chipscale demonstration of anti-Hermitian coupling between resonant photodetector elements also facilitates near-unity photon-sorting efficiencies, near-unity absorption, and a narrow spectral response (a 30 nm) for the different wavelength channels. This work opens up entirely new design paradigms for image sensors and energy harvesting systems in which the active elements both sort and detect photons.
| Original language | English |
|---|---|
| Article number | 316 |
| Journal | Nature communications |
| Volume | 9 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2018 Dec 1 |
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ASJC Scopus subject areas
- Chemistry(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Physics and Astronomy(all)
Cite this
Anti-Hermitian photodetector facilitating efficient subwavelength photon sorting. / Kim, Soo Jin; Kang, Ju Hyung; Mutlu, Mehmet; Park, Joonsuk; Park, Woosung; Goodson, Kenneth E.; Sinclair, Robert; Fan, Shanhui; Kik, Pieter G.; Brongersma, Mark L.
In: Nature communications, Vol. 9, No. 1, 316, 01.12.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anti-Hermitian photodetector facilitating efficient subwavelength photon sorting
AU - Kim, Soo Jin
AU - Kang, Ju Hyung
AU - Mutlu, Mehmet
AU - Park, Joonsuk
AU - Park, Woosung
AU - Goodson, Kenneth E.
AU - Sinclair, Robert
AU - Fan, Shanhui
AU - Kik, Pieter G.
AU - Brongersma, Mark L.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - The ability to split an incident light beam into separate wavelength bands is central to a diverse set of optical applications, including imaging, biosensing, communication, photocatalysis, and photovoltaics. Entirely new opportunities are currently emerging with the recently demonstrated possibility to spectrally split light at a subwavelength scale with optical antennas. Unfortunately, such small structures offer limited spectral control and are hard to exploit in optoelectronic devices. Here, we overcome both challenges and demonstrate how within a single-layer metafilm one can laterally sort photons of different wavelengths below the free-space diffraction limit and extract a useful photocurrent. This chipscale demonstration of anti-Hermitian coupling between resonant photodetector elements also facilitates near-unity photon-sorting efficiencies, near-unity absorption, and a narrow spectral response (a 30 nm) for the different wavelength channels. This work opens up entirely new design paradigms for image sensors and energy harvesting systems in which the active elements both sort and detect photons.
AB - The ability to split an incident light beam into separate wavelength bands is central to a diverse set of optical applications, including imaging, biosensing, communication, photocatalysis, and photovoltaics. Entirely new opportunities are currently emerging with the recently demonstrated possibility to spectrally split light at a subwavelength scale with optical antennas. Unfortunately, such small structures offer limited spectral control and are hard to exploit in optoelectronic devices. Here, we overcome both challenges and demonstrate how within a single-layer metafilm one can laterally sort photons of different wavelengths below the free-space diffraction limit and extract a useful photocurrent. This chipscale demonstration of anti-Hermitian coupling between resonant photodetector elements also facilitates near-unity photon-sorting efficiencies, near-unity absorption, and a narrow spectral response (a 30 nm) for the different wavelength channels. This work opens up entirely new design paradigms for image sensors and energy harvesting systems in which the active elements both sort and detect photons.
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U2 - 10.1038/s41467-017-02496-y
DO - 10.1038/s41467-017-02496-y
M3 - Article
C2 - 29358626
AN - SCOPUS:85040994223
VL - 9
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 316
ER -