Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses

Abstract Vertically stacked van der Waals (vdW) heterostructures have introduced a unique way to engineer optical and electronic responses in multifunctional photonic and quantum devices. However, the technical challenges associated with the artificially fabricated vertical heterostructures have eme...

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Autores principales:	Ravi P. N. Tripathi, Jie Gao, Xiaodong Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8e0da1c675a948f8a49ca763e829775f
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spelling	oai:doaj.org-article:8e0da1c675a948f8a49ca763e829775f2021-12-02T18:27:49ZNaturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses10.1038/s41598-021-88143-52045-2322https://doaj.org/article/8e0da1c675a948f8a49ca763e829775f2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88143-5https://doaj.org/toc/2045-2322Abstract Vertically stacked van der Waals (vdW) heterostructures have introduced a unique way to engineer optical and electronic responses in multifunctional photonic and quantum devices. However, the technical challenges associated with the artificially fabricated vertical heterostructures have emerged as a bottleneck to restrict their proficient utilization, which emphasizes the necessity of exploring naturally occurring vdW heterostructures. As one type of naturally occurring vdW heterostructures, franckeite has recently attracted significant interest in optoelectronic applications, but the understanding of light–matter interactions in such layered mineral is still very limited especially in the nonlinear optical regime. Herein, the anisotropic Raman scattering and third-harmonic generation (THG) from mechanically exfoliated franckeite thin flakes are investigated. The observed highly anisotropic Raman modes and THG emission patterns originate from the low-symmetry crystal structure of franckeite induced by the lattice incommensurability between two constituent stacked layers. The thickness-dependent anisotropic THG response is further analyzed to retrieve the third-order nonlinear susceptibility for franckeite crystal. The results discussed herein not only provide new insights in engineering the nonlinear light–matter interactions in natural vdW heterostructures, but also develop a testbed for designing future miniaturized quantum photonics devices and circuits based on such heterostructures.Ravi P. N. TripathiJie GaoXiaodong YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ravi P. N. Tripathi Jie Gao Xiaodong Yang Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses
description	Abstract Vertically stacked van der Waals (vdW) heterostructures have introduced a unique way to engineer optical and electronic responses in multifunctional photonic and quantum devices. However, the technical challenges associated with the artificially fabricated vertical heterostructures have emerged as a bottleneck to restrict their proficient utilization, which emphasizes the necessity of exploring naturally occurring vdW heterostructures. As one type of naturally occurring vdW heterostructures, franckeite has recently attracted significant interest in optoelectronic applications, but the understanding of light–matter interactions in such layered mineral is still very limited especially in the nonlinear optical regime. Herein, the anisotropic Raman scattering and third-harmonic generation (THG) from mechanically exfoliated franckeite thin flakes are investigated. The observed highly anisotropic Raman modes and THG emission patterns originate from the low-symmetry crystal structure of franckeite induced by the lattice incommensurability between two constituent stacked layers. The thickness-dependent anisotropic THG response is further analyzed to retrieve the third-order nonlinear susceptibility for franckeite crystal. The results discussed herein not only provide new insights in engineering the nonlinear light–matter interactions in natural vdW heterostructures, but also develop a testbed for designing future miniaturized quantum photonics devices and circuits based on such heterostructures.
format	article
author	Ravi P. N. Tripathi Jie Gao Xiaodong Yang
author_facet	Ravi P. N. Tripathi Jie Gao Xiaodong Yang
author_sort	Ravi P. N. Tripathi
title	Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses
title_short	Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses
title_full	Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses
title_fullStr	Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses
title_full_unstemmed	Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses
title_sort	naturally occurring layered mineral franckeite with anisotropic raman scattering and third-harmonic generation responses
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8e0da1c675a948f8a49ca763e829775f
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Naturally occurring layered mineral franckeite with anisotropic Raman scattering and third-harmonic generation responses

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