Mid-infrared optical resonances in quantum dot photodetectors coupled with metallic gratings with different aperture diameters

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Mid-infrared optical resonances in quantum dot photodetectors coupled with metallic gratings with different aperture diameters. / Yakimov, A. I.; Kirienko, V. V.; Bloshkin, A. A. et al.

In: Current Applied Physics, Vol. 20, No. 7, 07.2020, p. 877-882.

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

BibTeX

@article{e8be33f7abaf427f89aca12420d21115,

title = "Mid-infrared optical resonances in quantum dot photodetectors coupled with metallic gratings with different aperture diameters",

abstract = "The paper is devoted to optical testing of mid-infrared Ge/Si photodetectors obtained by stacking of self-assembled Ge quantum dots in multilayer structures, which are near-field coupled to the adjacent nanoplasmonic arrays of subwavelength holes in metallic films. It is shown that photocurrent and near-field spectra consist of several sets of peaks, which are attributted to surface plasmon waves, localized surface plasmon modes or diffractive Rayleigh anomaly depending on the hole diameter and the angle of incidence θ. We find that for small holes the greatest contribution to the photocurrent enhancement is due to the excitation of the surface plasmon-polariton waves for all θ. As the hole diameter is increased and becomes comparable with the array periodicity, the normal-incident photoresponse improvement is provided by the Rayleigh anomaly. With the increase of incident angle, the photocurrent enhancement is supposed to arise from coupling of the localized shape resonance and propagating plasmon modes.",

keywords = "Mid-infrared detectors, Quantum dots, Subwavelength structures, Surface plasmons, TRANSMISSION, ARRAYS",

author = "Yakimov, {A. I.} and Kirienko, {V. V.} and Bloshkin, {A. A.} and Dvurechenskii, {A. V.} and Utkin, {D. E.}",

year = "2020",

month = jul,

doi = "10.1016/j.cap.2020.04.009",

language = "English",

volume = "20",

pages = "877--882",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier",

number = "7",

}

RIS

TY - JOUR

T1 - Mid-infrared optical resonances in quantum dot photodetectors coupled with metallic gratings with different aperture diameters

AU - Yakimov, A. I.

AU - Kirienko, V. V.

AU - Bloshkin, A. A.

AU - Dvurechenskii, A. V.

AU - Utkin, D. E.

PY - 2020/7

Y1 - 2020/7

N2 - The paper is devoted to optical testing of mid-infrared Ge/Si photodetectors obtained by stacking of self-assembled Ge quantum dots in multilayer structures, which are near-field coupled to the adjacent nanoplasmonic arrays of subwavelength holes in metallic films. It is shown that photocurrent and near-field spectra consist of several sets of peaks, which are attributted to surface plasmon waves, localized surface plasmon modes or diffractive Rayleigh anomaly depending on the hole diameter and the angle of incidence θ. We find that for small holes the greatest contribution to the photocurrent enhancement is due to the excitation of the surface plasmon-polariton waves for all θ. As the hole diameter is increased and becomes comparable with the array periodicity, the normal-incident photoresponse improvement is provided by the Rayleigh anomaly. With the increase of incident angle, the photocurrent enhancement is supposed to arise from coupling of the localized shape resonance and propagating plasmon modes.

AB - The paper is devoted to optical testing of mid-infrared Ge/Si photodetectors obtained by stacking of self-assembled Ge quantum dots in multilayer structures, which are near-field coupled to the adjacent nanoplasmonic arrays of subwavelength holes in metallic films. It is shown that photocurrent and near-field spectra consist of several sets of peaks, which are attributted to surface plasmon waves, localized surface plasmon modes or diffractive Rayleigh anomaly depending on the hole diameter and the angle of incidence θ. We find that for small holes the greatest contribution to the photocurrent enhancement is due to the excitation of the surface plasmon-polariton waves for all θ. As the hole diameter is increased and becomes comparable with the array periodicity, the normal-incident photoresponse improvement is provided by the Rayleigh anomaly. With the increase of incident angle, the photocurrent enhancement is supposed to arise from coupling of the localized shape resonance and propagating plasmon modes.

KW - Mid-infrared detectors

KW - Quantum dots

KW - Subwavelength structures

KW - Surface plasmons

KW - TRANSMISSION

KW - ARRAYS

UR - http://www.scopus.com/inward/record.url?scp=85084379185&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2020.04.009

DO - 10.1016/j.cap.2020.04.009

M3 - Article

AN - SCOPUS:85084379185

VL - 20

SP - 877

EP - 882

JO - Current Applied Physics

JF - Current Applied Physics

SN - 1567-1739

IS - 7

ER -

ID: 24260201