XVI Russian Conference on Semiconductor Physics, October 7-11, 2024, St. Petersburg
Optical properties, photonics

Bragg resonance in the system of layers of plasmonic Bi nanoparticles in GaAs matrix

E. D. Polenok^ab, N. A. Bert^b, A. A. Ivanov^b, V. V. Preobrazhenskii^c, M. A. Putyato^c, B. R. Semyagin^c, L. A. Snigirev^b, V. I. Ushanov^b, M. A. Yagovkina^b, V. V. Chaldyshev<sup>b

a</sup> Peter the Great St. Petersburg Polytechnic University
^b Ioffe Institute, St. Petersburg
^c Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk

Abstract: We have experimentally studied the optical properties of a structure that consists of a periodical system of quasi-two-dimensional layers of plasmonic bismuth nanoparticles embedded into the crystalline matrix of gallium arsenide. By using methods of transmission electron microscopy and X-ray diffraction, the spatial distribution of plasmonic nanoparticles was experimentally studied, and their characteristic size and concentration were determined. The transfer matrix method was used for modelling the optical reflection spectra. Geometric parameters of the model were determined on the base of the structural data. Optical response of the separate bismuth nanoparticles was calculated in terms of the Mie theory. The developed model quantitatively describes all the significant peculiarities of the experimental optical reflection spectra.

Keywords: non-stoichiometric GaAs, Bi nanoinclusions, localized surface plasmon resonance, Bragg diffraction, optical reflection.

Received: 10.10.2024
Revised: 17.11.2024
Accepted: 18.11.2024

DOI: 10.61011/FTT.2025.01.59766.3-25

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