Please use this identifier to cite or link to this item:
Title: Exciton-enabled meta-optics in two-dimensional transition metal dichalcogenides
Authors: Wang, Zeng
Yuan, Guanghui
Yang, Ming
Chai, Jianwei
Wu, Steve Qing Yang
Wang, Tao
Sebek, Matej
Wang, Dan
Wang, Lei
Wang, Shijie
Chi, Dongzhi
Adamo, Giorgio
Soci, Cesare
Sun, Handong
Huang, Kun
Teng, Jinghua
Keywords: Science::Physics
Issue Date: 2020
Source: Wang, Z., Yuan, G., Yang, M., Chai, J., Wu, S. Q. Y., Wang, T., Sebek, M., Wang, D., Wang, L., Wang, S., Chi, D., Adamo, G., Soci, C., Sun, H., Huang, K. & Teng, J. (2020). Exciton-enabled meta-optics in two-dimensional transition metal dichalcogenides. Nano Letters, 20(11), 7964-7972.
Journal: Nano Letters
Abstract: Optical wavefront engineering has been rapidly developing in fundamentals from phase accumulation in the optical path to the electromagnetic resonances of confined nanomodes in optical metasurfaces. However, the amplitude modulation of light has limited approaches that usually originate from the ohmic loss and absorptive dissipation of materials. Here, an atomically thin photon-sieve platform made of MoS2 multilayers is demonstrated for high-quality optical nanodevices, assisted fundamentally by strong excitonic resonances at the band-nesting region of MoS2. The atomic thin MoS2 significantly facilitates high transmission of the sieved photons and high-fidelity nanofabrication. A proof-of-concept two-dimensional (2D) nanosieve hologram exhibits 10-fold enhanced efficiency compared with its non-2D counterparts. Furthermore, a supercritical 2D lens with its focal spot breaking diffraction limit is developed to exhibit experimentally far-field label-free aberrationless imaging with a resolution of ∼0.44λ at λ = 450 nm in air. This transition-metal-dichalcogenide (TMDC) photonic platform opens new opportunities toward future 2D meta-optics and nanophotonics.
ISSN: 1530-6992
DOI: 10.1021/acs.nanolett.0c02712
Rights: © 2020 American Chemical Society (ACS). All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

Page view(s)

Updated on Jan 17, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.