Far-Field Spectroscopy and Near-Field Optical Imaging of Coupled Plasmon-Phonon Polaritons in 2D van der Waals Heterostructures

2016 ◽  
Vol 28 (15) ◽  
pp. 2931-2938 ◽  
Author(s):  
Xiaoxia Yang ◽  
Feng Zhai ◽  
Hai Hu ◽  
Debo Hu ◽  
Ruina Liu ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Near Field ◽  
Van Der Waals ◽  
Far Field ◽  
Van Der Waals Heterostructures ◽  
Field Spectroscopy ◽  
Phonon Polaritons

Photonic transport in a graphene van der Waals homojunction

2015 ◽  
Vol 3 (41) ◽  
pp. 10879-10885 ◽  
Author(s):  
Lian Shen ◽  
Xiao Lin ◽  
Runren Zhang ◽  
Xu Liu ◽  
Shisheng Lin ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Near Field ◽  
Van Der Waals ◽  
Ultraviolet Spectrum

A flexible graphene van der Waals homojunction for near-field optical imaging is achieved in ultraviolet spectrum.

scholarly journals Plasmon-Enhanced Near-Field Chirality in Twisted van der Waals Heterostructures

Nano Letters ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 8711-8718
Author(s):  
Tobias Stauber ◽  
Tony Low ◽  
Guillermo Gómez-Santos
Keyword(s):  
Near Field ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures

scholarly journals Multimodal Nonlinear Optical Imaging of MoS2 and MoS2-Based van der Waals Heterostructures

ACS Nano ◽  
2016 ◽  
Vol 10 (3) ◽  
pp. 3766-3775 ◽  
Author(s):  
Dawei Li ◽  
Wei Xiong ◽  
Lijia Jiang ◽  
Zhiyong Xiao ◽  
Hossein Rabiee Golgir ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Nonlinear Optical ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Nonlinear Optical Imaging

scholarly journals Hyperbolic phonon-polaritons in boron nitride for near-field optical imaging and focusing

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Peining Li ◽  
Martin Lewin ◽  
Andrey V. Kretinin ◽  
Joshua D. Caldwell ◽  
Kostya S. Novoselov ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Optical Imaging ◽  
Near Field ◽  
Phonon Polaritons

Near-field optical imaging of unstained bacteria: comparison with normal atomic force and far-field optical microscopy in air and aqueous media

1998 ◽  
Vol 71 (1-4) ◽  
pp. 321-325 ◽  
Author(s):  
Nily Ben-Ami ◽  
Anna Radko ◽  
Udi Ben-Ami ◽  
Klony Lieberman ◽  
Zvi Rothman ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Optical Microscopy ◽  
Near Field ◽  
Aqueous Media ◽  
Far Field ◽  
Atomic Force

scholarly journals Engineering phonon polaritons in van der Waals heterostructures to enhance in-plane optical anisotropy

2019 ◽  
Vol 5 (4) ◽  
pp. eaau7171 ◽  
Author(s):  
Kundan Chaudhary ◽  
Michele Tamagnone ◽  
Mehdi Rezaee ◽  
D. Kwabena Bediako ◽  
Antonio Ambrosio ◽  
...  
Keyword(s):  
Optical Anisotropy ◽  
Hexagonal Boron Nitride ◽  
Near Field ◽  
Van Der Waals ◽  
Microscopy Study ◽  
Refractive Indices ◽  
Optical And Electrical Properties ◽  
Nanophotonic Devices ◽  
Two Dimensional Materials ◽  
Phonon Polaritons

Van der Waals (vdW) heterostructures assembled from layers of two-dimensional materials have attracted considerable interest due to their novel optical and electrical properties. Here, we report a scattering-type scanning near-field optical microscopy study of hexagonal boron nitride on black phosphorus (h-BN/BP) heterostructures, demonstrating the first direct observation of in-plane anisotropic phonon polariton modes in vdW heterostructures. Notably, the measured in-plane optical anisotropy along the armchair and zigzag crystal axes exceeds the ratio of refractive indices of BP in the x-y plane. We explain that this enhancement is due to the high confinement of the phonon polaritons in h-BN. We observe a maximum in-plane optical anisotropy of αmax = 1.25 in the frequency spectrum at 1405 to 1440 cm−1. These results provide new insights into the behavior of polaritons in vdW heterostructures, and the observed anisotropy enhancement paves the way to novel nanophotonic devices and to a new way to characterize optical anisotropy in thin films.

Raman spectroscopy: probing the border between near-field and far-field spectroscopy

1998 ◽  
Author(s):  
Hans D. Hallen ◽  
Michael A. Paesler ◽  
Catherine L. Jahncke
Keyword(s):  
Raman Spectroscopy ◽  
Near Field ◽  
Far Field ◽  
Field Spectroscopy

scholarly journals Extracting the Infrared Permittivity of SiO2 Substrates Locally by Near-Field Imaging of Phonon Polaritons in a van der Waals Crystal

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 120
Author(s):  
Patricia Aguilar-Merino ◽  
Gonzalo Álvarez-Pérez ◽  
Javier Taboada-Gutiérrez ◽  
Jiahua Duan ◽  
Iván Prieto ◽  
...  
Keyword(s):  
Molybdenum Trioxide ◽  
Hexagonal Boron Nitride ◽  
Near Field ◽  
Van Der Waals ◽  
Field Studies ◽  
Dielectric Substrates ◽  
Nanophotonic Devices ◽  
Near Field Imaging ◽  
Materials Research ◽  
Phonon Polaritons

Layered materials in which individual atomic layers are bonded by weak van der Waals forces (vdW materials) constitute one of the most prominent platforms for materials research. Particularly, polar vdW crystals, such as hexagonal boron nitride (h-BN), alpha-molybdenum trioxide (α-MoO3) or alpha-vanadium pentoxide (α-V2O5), have received significant attention in nano-optics, since they support phonon polaritons (PhPs)―light coupled to lattice vibrations― with strong electromagnetic confinement and low optical losses. Recently, correlative far- and near-field studies of α-MoO3 have been demonstrated as an effective strategy to accurately extract the permittivity of this material. Here, we use this accurately characterized and low-loss polaritonic material to sense its local dielectric environment, namely silica (SiO2), one of the most widespread substrates in nanotechnology. By studying the propagation of PhPs on α-MoO3 flakes with different thicknesses laying on SiO2 substrates via near-field microscopy (s-SNOM), we extract locally the infrared permittivity of SiO2. Our work reveals PhPs nanoimaging as a versatile method for the quantitative characterization of the local optical properties of dielectric substrates, crucial for understanding and predicting the response of nanomaterials and for the future scalability of integrated nanophotonic devices.

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