Quantum dot based mid-infrared photodetector enhanced by a hybrid metal-dielectric optical antenna

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Quantum dot based mid-infrared photodetector enhanced by a hybrid metal-dielectric optical antenna. / Yakimov, Andrew; Yakimov, Andrew; Kirienko, Victor et al.

In: Journal of Physics D: Applied Physics, Vol. 53, No. 33, 335105, 08.06.2020.

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

Author

Yakimov, Andrew ; Yakimov, Andrew ; Kirienko, Victor et al. / Quantum dot based mid-infrared photodetector enhanced by a hybrid metal-dielectric optical antenna. In: Journal of Physics D: Applied Physics. 2020 ; Vol. 53, No. 33.

BibTeX

@article{690a29d3c94d40a69f6afe775c63abe0,

title = "Quantum dot based mid-infrared photodetector enhanced by a hybrid metal-dielectric optical antenna",

abstract = "Surface plasmon waves and Rayleigh anomaly are characteristic optical phenomena exhibited by periodic subwavelength grating structures. In this paper, a hybrid metal-dielectric metasurface is proposed to improve the photoresponse of Ge/Si quantum dot infrared photodetectors (QDIPs) with limited absorption layer thickness. The composite metasurface consists of a regular array of silicon pillars. The pillars protrude through subwavelength holes in a perforated gold film on the detector top. We demonstrate that by combining effects of dielectric and plasmonic metal components, the QDIP photoresponse can be significantly improved compared to case when all-dielectric and metal gratings work alone. We observe about four times photoresponse enhancement with the hybrid metasurface device relative to a common plasmonic design with a two-dimensional metal hole array. Compared with a bare QDIP, the peak responsivity of the hybrid detector at a wavelength of 4.4 µm is increased by a factor of 15. The enhanced sensitivity is supposed to arise from coupling of the surface plasmon resonance and diffractive effect related to the Rayleigh anomaly. ",

keywords = "Infrared photodetection, Near-field enhancement, Quantum dots, Surface plasmons, LIGHT, surface plasmons, ARRAYS, quantum dots, SURFACE-PLASMONS, TRANSMISSION, FILMS, near-field enhancement, GAPS, RESONANCES, infrared photodetection",

author = "Andrew Yakimov and Andrew Yakimov and Victor Kirienko and Aleksei Bloshkin and Anatolii Dvurechenskii and Dmitrii Utkin",

year = "2020",

month = jun,

day = "8",

doi = "10.1088/1361-6463/ab84a7",

language = "English",

volume = "53",

journal = "Journal Physics D: Applied Physics",

issn = "0022-3727",

publisher = "IOP Publishing Ltd.",

number = "33",

}

RIS

TY - JOUR

T1 - Quantum dot based mid-infrared photodetector enhanced by a hybrid metal-dielectric optical antenna

AU - Yakimov, Andrew

AU - Kirienko, Victor

AU - Bloshkin, Aleksei

AU - Dvurechenskii, Anatolii

AU - Utkin, Dmitrii

PY - 2020/6/8

Y1 - 2020/6/8

N2 - Surface plasmon waves and Rayleigh anomaly are characteristic optical phenomena exhibited by periodic subwavelength grating structures. In this paper, a hybrid metal-dielectric metasurface is proposed to improve the photoresponse of Ge/Si quantum dot infrared photodetectors (QDIPs) with limited absorption layer thickness. The composite metasurface consists of a regular array of silicon pillars. The pillars protrude through subwavelength holes in a perforated gold film on the detector top. We demonstrate that by combining effects of dielectric and plasmonic metal components, the QDIP photoresponse can be significantly improved compared to case when all-dielectric and metal gratings work alone. We observe about four times photoresponse enhancement with the hybrid metasurface device relative to a common plasmonic design with a two-dimensional metal hole array. Compared with a bare QDIP, the peak responsivity of the hybrid detector at a wavelength of 4.4 µm is increased by a factor of 15. The enhanced sensitivity is supposed to arise from coupling of the surface plasmon resonance and diffractive effect related to the Rayleigh anomaly.

AB - Surface plasmon waves and Rayleigh anomaly are characteristic optical phenomena exhibited by periodic subwavelength grating structures. In this paper, a hybrid metal-dielectric metasurface is proposed to improve the photoresponse of Ge/Si quantum dot infrared photodetectors (QDIPs) with limited absorption layer thickness. The composite metasurface consists of a regular array of silicon pillars. The pillars protrude through subwavelength holes in a perforated gold film on the detector top. We demonstrate that by combining effects of dielectric and plasmonic metal components, the QDIP photoresponse can be significantly improved compared to case when all-dielectric and metal gratings work alone. We observe about four times photoresponse enhancement with the hybrid metasurface device relative to a common plasmonic design with a two-dimensional metal hole array. Compared with a bare QDIP, the peak responsivity of the hybrid detector at a wavelength of 4.4 µm is increased by a factor of 15. The enhanced sensitivity is supposed to arise from coupling of the surface plasmon resonance and diffractive effect related to the Rayleigh anomaly.

KW - Infrared photodetection

KW - Near-field enhancement

KW - Quantum dots

KW - Surface plasmons

KW - LIGHT

KW - surface plasmons

KW - ARRAYS

KW - quantum dots

KW - SURFACE-PLASMONS

KW - TRANSMISSION

KW - FILMS

KW - near-field enhancement

KW - GAPS

KW - RESONANCES

KW - infrared photodetection

UR - http://www.scopus.com/inward/record.url?scp=85087336252&partnerID=8YFLogxK

U2 - 10.1088/1361-6463/ab84a7

DO - 10.1088/1361-6463/ab84a7

M3 - Article

AN - SCOPUS:85087336252

VL - 53

JO - Journal Physics D: Applied Physics

JF - Journal Physics D: Applied Physics

SN - 0022-3727

IS - 33

M1 - 335105

ER -

ID: 24722071