Observation of second harmonic generation from multilayer Tin diselenide

Biswas, R and Dandu, M and Prosad, A and Menon, S and Majumdar, K and Raghunathan, V (2019) Observation of second harmonic generation from multilayer Tin diselenide. In: International Conference on Optical MEMS and Nanophotonics Volume 2019-July, July 2019, Article number 8925139, Pages 30-31 2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019; Daejeon; South Korea; 28 July 2019 through 1 August 2019, July 2019, Daejeon, Korea (South), pp. 30-31.

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Abstract

We report spatially resolved second harmonic generation from a multilayer tin di-selenide $(\mathrm{S}\mathrm{n}\mathrm{S}\mathrm{e}_{2})$ flake using a nonlinear optical microscopy setup. The second order nonlinear signal from $\mathrm{S}\mathrm{n}\mathrm{S}\mathrm{e}_{2}\ \mathrm{i}\mathrm{s}\sim 21$ times weaker than that of quartz substrate. Tin di-selenide is expected to exhibit centrosymmetric lattice arrangement with vanishing second-order nonlinear optical effects. The observed second order nonlinear effects from multi-layer $\mathrm{S}\mathrm{n}\mathrm{S}\mathrm{e}_{2}$ is ascribed to lattice distortions.

Item Type:	Conference Proceedings
Publication:	International Conference on Optical MEMS and Nanophotonics
Publisher:	IEEE Computer Society
Additional Information:	Copyright of this article belongs to IEEE Computer Society
Keywords:	Harmonic analysis; Harmonic generation; MOEMS; Multilayers; Nanophotonics; Optical lattices; Optical multilayers; Selenium compounds; Tin compounds, Lattice arrangements; Lattice distortions; Layered material; Nonlinear optical microscopy; Nonlinear signals; Second-order nonlinear effects; Second-order nonlinear optical; Spatially resolved, Nonlinear optics
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	29 Jan 2020 10:49
Last Modified:	29 Jan 2020 10:49
URI:	http://eprints.iisc.ac.in/id/eprint/64379

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