Surface plasmon induced spot and line formation at interfaces of ITO coated LiNbO3 slabs and gigantic nonlinearity

Remarkable spots and lines were clearly observed at the two interfaces of indium-tin-oxide coated Z-cut Fe-doped lithium noibate plates under illumination by milliwatt continuous-wave laser light; this occurred because of the visible surface plasmons (SPs) supported by the promising non-metal plasmo...

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Bibliographic Details
Published inScientific reports Vol. 11; no. 1; p. 19790
Main Authors Xiong, Zuoren, Ma, Xinyan, Pei, Yanbo, Zhang, Yingbin, Zhao, Hua
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 05.10.2021
Nature Publishing Group
Nature Portfolio
Subjects
639/624/400/385
639/766/1960
Electric fields
Electrostatic properties
Humanities and Social Sciences
Interfaces
Laboratories
Lasers
Lithium
multidisciplinary
Nonlinear systems
Optics
Photonics
Science
Science (multidisciplinary)
Slabs
Tin
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Summary:Remarkable spots and lines were clearly observed at the two interfaces of indium-tin-oxide coated Z-cut Fe-doped lithium noibate plates under illumination by milliwatt continuous-wave laser light; this occurred because of the visible surface plasmons (SPs) supported by the promising non-metal plasmonic system. The intriguing observations are here explained via the SP-strengthened nonlinear effect, through consideration of the electrostatic field (which is comparable to the atomic field) and its large gradient; this hints at a promising, highly sensitive plasmonic system. The gigantic nonlinear effect discussed in this paper should be ubiquitously existed in many oxide ferroelectric/semiconductor combinations and is promising for visible plasmonic applications.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-99270-4