Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals

Van der Waals materials, existing in a range of thicknesses from monolayer to bulk, allow for interplay between surface and bulk nonlinearities, which otherwise dominate only at atomically-thin or bulk extremes, respectively. Here, we observe an unexpected peak in intensity of the generated second h...

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Autores principales: Deckoff-Jones, Skylar, Zhang, Jingjing, Petoukhoff, Christopher E., Man, Michael K.L., Lei, Sidong, Vajtai, Robert, Ajayan, Pulickel M., Talbayev, Diyar, Madéo, Julien, Dani, Keshav M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4776178/
https://www.ncbi.nlm.nih.gov/pubmed/26936437
http://dx.doi.org/10.1038/srep22620
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author Deckoff-Jones, Skylar
Zhang, Jingjing
Petoukhoff, Christopher E.
Man, Michael K.L.
Lei, Sidong
Vajtai, Robert
Ajayan, Pulickel M.
Talbayev, Diyar
Madéo, Julien
Dani, Keshav M.
author_facet Deckoff-Jones, Skylar
Zhang, Jingjing
Petoukhoff, Christopher E.
Man, Michael K.L.
Lei, Sidong
Vajtai, Robert
Ajayan, Pulickel M.
Talbayev, Diyar
Madéo, Julien
Dani, Keshav M.
author_sort Deckoff-Jones, Skylar
collection PubMed
description Van der Waals materials, existing in a range of thicknesses from monolayer to bulk, allow for interplay between surface and bulk nonlinearities, which otherwise dominate only at atomically-thin or bulk extremes, respectively. Here, we observe an unexpected peak in intensity of the generated second harmonic signal versus the thickness of Indium Selenide crystals, in contrast to the quadratic increase expected from thin crystals. We explain this by interference effects between surface and bulk nonlinearities, which offer a new handle on engineering the nonlinear optical response of 2D materials and their heterostructures.
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spelling pubmed-47761782016-03-09 Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals Deckoff-Jones, Skylar Zhang, Jingjing Petoukhoff, Christopher E. Man, Michael K.L. Lei, Sidong Vajtai, Robert Ajayan, Pulickel M. Talbayev, Diyar Madéo, Julien Dani, Keshav M. Sci Rep Article Van der Waals materials, existing in a range of thicknesses from monolayer to bulk, allow for interplay between surface and bulk nonlinearities, which otherwise dominate only at atomically-thin or bulk extremes, respectively. Here, we observe an unexpected peak in intensity of the generated second harmonic signal versus the thickness of Indium Selenide crystals, in contrast to the quadratic increase expected from thin crystals. We explain this by interference effects between surface and bulk nonlinearities, which offer a new handle on engineering the nonlinear optical response of 2D materials and their heterostructures. Nature Publishing Group 2016-03-03 /pmc/articles/PMC4776178/ /pubmed/26936437 http://dx.doi.org/10.1038/srep22620 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Deckoff-Jones, Skylar
Zhang, Jingjing
Petoukhoff, Christopher E.
Man, Michael K.L.
Lei, Sidong
Vajtai, Robert
Ajayan, Pulickel M.
Talbayev, Diyar
Madéo, Julien
Dani, Keshav M.
Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals
title Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals
title_full Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals
title_fullStr Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals
title_full_unstemmed Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals
title_short Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals
title_sort observing the interplay between surface and bulk optical nonlinearities in thin van der waals crystals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4776178/
https://www.ncbi.nlm.nih.gov/pubmed/26936437
http://dx.doi.org/10.1038/srep22620
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