Strong nonlinear optical processes with extraordinary polarization anisotropy in inversion-symmetry broken two-dimensional PdPSe

Simple item page
dc.citation.articleNumber119en_US
dc.citation.journalTitleLight: Science & Applicationsen_US
dc.citation.volumeNumber13en_US
dc.contributor.authorZhu, Songen_US
dc.contributor.authorDuan, Ruihuanen_US
dc.contributor.authorXu, Xiaodongen_US
dc.contributor.authorSun, Fangyuanen_US
dc.contributor.authorChen, Wenduoen_US
dc.contributor.authorWang, Fakunen_US
dc.contributor.authorLi, Siyuanen_US
dc.contributor.authorYe, Mingen_US
dc.contributor.authorZhou, Xinen_US
dc.contributor.authorCheng, Jinluoen_US
dc.contributor.authorWu, Yaoen_US
dc.contributor.authorLiang, Houkunen_US
dc.contributor.authorKono, Junichiroen_US
dc.contributor.authorLi, Xingjien_US
dc.contributor.authorLiu, Zhengen_US
dc.contributor.authorWang, Qi Jieen_US
dc.date.accessioned2024-10-08T13:27:48Zen_US
dc.date.available2024-10-08T13:27:48Zen_US
dc.date.issued2024en_US
dc.description.abstractNonlinear optical activities, especially second harmonic generation (SHG), are key phenomena in inversion-symmetry-broken two-dimensional (2D) transition metal dichalcogenides (TMDCs). On the other hand, anisotropic nonlinear optical processes are important for unique applications in nano-nonlinear photonic devices with polarization functions, having become one of focused research topics in the field of nonlinear photonics. However, the strong nonlinearity and strong optical anisotropy do not exist simultaneously in common 2D materials. Here, we demonstrate strong second-order and third-order susceptibilities of 64 pm/V and 6.2×10−19 m2/V2, respectively, in the even-layer PdPSe, which has not been discovered in other common TMDCs (e.g., MoS2). Strikingly, it also simultaneously exhibited strong SHG anisotropy with an anisotropic ratio of ~45, which is the largest reported among all 2D materials to date, to the best of our knowledge. In addition, the SHG anisotropy ratio can be harnessed from 0.12 to 45 (375 times) by varying the excitation wavelength due to the dispersion of $${\chi }^{(2)}$$values. As an illustrative example, we further demonstrate polarized SHG imaging for potential applications in crystal orientation identification and polarization-dependent spatial encoding. These findings in 2D PdPSe are promising for nonlinear nanophotonic and optoelectronic applications.en_US
dc.identifier.citationZhu, S., Duan, R., Xu, X., Sun, F., Chen, W., Wang, F., Li, S., Ye, M., Zhou, X., Cheng, J., Wu, Y., Liang, H., Kono, J., Li, X., Liu, Z., & Wang, Q. J. (2024). Strong nonlinear optical processes with extraordinary polarization anisotropy in inversion-symmetry broken two-dimensional PdPSe. Light: Science & Applications, 13(1), 119. https://doi.org/10.1038/s41377-024-01474-6en_US
dc.identifier.digitals41377-024-01474-6en_US
dc.identifier.doihttps://doi.org/10.1038/s41377-024-01474-6en_US
dc.identifier.urihttps://hdl.handle.net/1911/117921en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleStrong nonlinear optical processes with extraordinary polarization anisotropy in inversion-symmetry broken two-dimensional PdPSeen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
s41377-024-01474-6.pdf
Size:
2.29 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
ECE Publications
Materials Science and NanoEngineering Publications