TY - JOUR

T1 - Polarized reflectance spectroscopy of aluminum nanoantennas on the surface of emitting GeSiSn/Si heterostructures

AU - Khakhulin, Semyon A.

AU - Firsov, Dmitrii D.

AU - Komkov, Oleg S.

AU - Timofeev, Vyacheslav A.

AU - Skvortsov, Ilya V.

AU - Mashanov, Vladimir I.

AU - Utkin, Dmitry E.

N1 - The study was funded by the Russian Science Foundation grant No. 20-79-10092.

PY - 2024/5

Y1 - 2024/5

N2 - The study presents an investigation of the optical properties of rectangular-shaped aluminum nanoantenna arrays formed on the surface of an emitting GeSiSn/Si heterostructure with multiple quantum wells. The positions of the localized surface plasmon resonance modes excited along the long (L) and short (S) sides of the examined nanoantennas are determined utilizing the technique of Fourier-transform infrared reflectance anisotropy spectroscopy. Experimental results demonstrate that both L- and S-modes are located in the near-infrared range, and as the lateral dimensions of the nanoantennas increase, the modes’ positions shift towards lower energies with an increase in the intensity of the resonance. The S-mode appears in the spectra as an overlay on the more pronounced L-mode with an intensity an order of magnitude lower. The geometry of the nanoantennas arrays with the resonance position near the photoluminescence peak of Ge0.84Si0.076Sn0.084/Si heterostructures (E ≈ 0.65 eV) is characterized.

AB - The study presents an investigation of the optical properties of rectangular-shaped aluminum nanoantenna arrays formed on the surface of an emitting GeSiSn/Si heterostructure with multiple quantum wells. The positions of the localized surface plasmon resonance modes excited along the long (L) and short (S) sides of the examined nanoantennas are determined utilizing the technique of Fourier-transform infrared reflectance anisotropy spectroscopy. Experimental results demonstrate that both L- and S-modes are located in the near-infrared range, and as the lateral dimensions of the nanoantennas increase, the modes’ positions shift towards lower energies with an increase in the intensity of the resonance. The S-mode appears in the spectra as an overlay on the more pronounced L-mode with an intensity an order of magnitude lower. The geometry of the nanoantennas arrays with the resonance position near the photoluminescence peak of Ge0.84Si0.076Sn0.084/Si heterostructures (E ≈ 0.65 eV) is characterized.

KW - LSPR

KW - RAS

KW - aluminum nanoantennas

KW - localized surface plasmon resonance

KW - polarized reflectance

KW - reflectance anisotropy spectroscopy

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85197849700&origin=inward&txGid=7afab4b859db1b808eb5c0615bf10b5c

UR - https://www.mendeley.com/catalogue/5e1d13fe-eca0-3f1d-87ec-1506ddf032d7/

U2 - 10.18721/JPM.171.113

DO - 10.18721/JPM.171.113

M3 - Conference article

VL - 17

SP - 83

EP - 88

JO - St. Petersburg State Polytechnical University Journal: Physics and Mathematics

JF - St. Petersburg State Polytechnical University Journal: Physics and Mathematics

SN - 2618-8686

IS - 1.1

ER -