Efficiency of Launching Highly Confined Polaritons by Infrared Light Incident on a Hyperbolic Material
Name
qt2cz3p617.pdf
Size
7.35 MB
Format
Adobe PDF
Checksum (MD5)
42962811835eb9ebd78141903581130d
Author(s)
Dai, Siyuan
Ma, Qiong
Yang, Yafang
Rosenfeld, Jeremy
Goldflam, Michael D.
McLeod, Alex
Sun, Zhiyuan
Andersen, Trond
Fei, Zhe
Liu, Mengkun
Date Issued
August 2017
Journal
Nano Letters
Publisher
American Chemical Society (ACS)
Citation
Dai, Siyuan, et al. “Efficiency of Launching Highly Confined Polaritons by Infrared Light Incident on a Hyperbolic Material.” Nano Letters 17,9 (2017): 5285–5290. doi:10.1021/acs.nanolett.7b01587. © 2017 Author(s)
Version
Author's final manuscript
Abstract
We investigated phonon-polaritons in hexagonal boron nitride - a naturally hyperbolic van der Waals material - by means of the scattering-type scanning near-field optical microscopy. Real-space nanoimages we have obtained detail how the polaritons are launched when the light incident on a thin hexagonal boron nitride slab is scattered by various intrinsic and extrinsic inhomogeneities, including sample edges, metallic nanodisks deposited on its top surface, random defects, and surface impurities. The scanned tip of the near-field microscope is itself a polariton launcher whose efficiency proves to be superior to all the other types of polariton launchers we studied. Our work may inform future development of polaritonic nanodevices as well as fundamental studies of collective modes in van der Waals materials.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/ACS.NANOLETT.7B01587
