journal article·2021-12-01Open access

Size effect of the Ge2Sb2Te5 cell atop the silicon nitride O-ring resonator on the attenuation coefficient

Petr Lazarenko, Vadim Kovalyuk, Pavel An, Aleksey Prokhodtsov, Alexander Golikov, Aleksey Sherchenkov, Sergey Kozyukhin, Ilia Fradkin, Galina Chulkova, Gregory Goltsman

APL Materials· Volume 9· Issue 12

Abstract

We have studied transmission spectra of a silicon nitride O-ring resonator with a Ge2Sb2Te5 (GST) thin-film cover. We have performed numerical simulations of the transmission, absorption, reflection, and scattering for the GST cells of various thicknesses and lengths and have also measured transmission spectra O-ring resonators for GST cells of various length and phase states. An analysis of the changes in the Q-factors has enabled us to identify the region of the GST cells where light scattering and absorption dominate and find the size dependence of amorphous and crystalline GST attenuation coefficients. The demonstrated results pave the way to high energy-efficient on-chip devices of a small footprint that can be switched either optically or electrically.
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Research context

OpenAlex topics: Photonic and Optical Devices · Phase-change materials and chalcogenides · Semiconductor Lasers and Optical Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Advanced Materials and Technologies, National Research University of Electronic Technology 1 , Zelenograd 124498, Russia

Department of Physics, Moscow Pedagogical State University 2 , Moscow 119435, Russia

Russian Quantum Center 3 , Skolkovo 143025, Moscow, Russia

National Research University Higher School of Economics 4 , Moscow 101000, Russia

Kurnakov Institute of General and Inorganic Chemistry of the RAS 5 , Moscow 119991, Russia

National Research Tomsk State University 6 , 36, Lenin Prospect, Tomsk, Russia

Skolkovo Institute of Science and Technology 7 , Bolshoy Boulevard 30, Moscow 121205, Russia

Moscow Institute of Physics and Technology 8 , Institutskiy Pereulok 9, Moscow Region 141701, Russia

NTI Center for Quantum Communications, National University of Science and Technology MISiS 9 , Leninsky prospekt 4, Moscow 119049, Russia

Funding

Russian Science Foundation

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