Near-Field Characterisation of Guided Modes in WS2 Nanobeams and Quasi-Bulk Crystals

Zara S. Taylor; Luke M. Hallacy; Xuerong Hu; Oliver T. Williams; Simone Strohmair; Fabian Felixberger; Alexander J. Knight; Timothy Chester-Parsons; Luke R. Wilson; Alexander I. Tartakovskii

doi:10.48550/arXiv.2607.00694

Paper details

Research paper

Experimental CharacterizationTheoretical

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Zara S. Taylor, Luke M. Hallacy, Xuerong Hu, Oliver T. Williams et al.

arXiv·2026·arXiv:2607.00694

Samples

Each sample groups how it was prepared, characterized, and measured. Click a card to expand.

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

3 characterizations3 properties2 figures

ExperimentalWS₂Studied Material

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

2 characterizations3 properties2 figures

ExperimentalWS₂Studied Material

Materials

WS₂

Studied Material

Also known as

tungsten disulfide

studied material

SiO₂

Substrate / Dielectric

substrate or dielectric

Why these are connected

Related documents with shared materials, methods, properties, or citations.

Near-Field Characterisation of Guided Modes in WS2 Nanobeams and Quasi-Bulk Crystals | Matter42 Literature

Properties

Type	Label	Value	Material	Sample	Source
Optical Band Gap	extinction coefficient trend	low sub-bandgap absorption	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.61unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.31unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	TE₀ effective index neff	3.9unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	TM₀ effective index neff	2.3unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	shift in extracted effective index	-0.25unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—

Properties

Type	Label	Value	Material	Sample	Source
Optical Band Gap	extinction coefficient trend	low sub-bandgap absorption	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.61unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.31unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	TE₀ effective index neff	3.9unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	TM₀ effective index neff	2.3unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	shift in extracted effective index	-0.25unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—

Properties

Type	Label	Value	Material	Sample	Source
Optical Band Gap	extinction coefficient trend	low sub-bandgap absorption	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.61unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.31unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	TE₀ effective index neff	3.9unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	TM₀ effective index neff	2.3unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	shift in extracted effective index	-0.25unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—

Properties

Type	Label	Value	Material	Sample	Source
Optical Band Gap	extinction coefficient trend	low sub-bandgap absorption	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.61unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	birefringence Δn	1.31unitless	WS₂	Quasi-bulk WS₂ crystal used as a waveguiding sample for hype	—
Fet On Off Ratio	TE₀ effective index neff	3.9unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	TM₀ effective index neff	2.3unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—
Fet On Off Ratio	shift in extracted effective index	-0.25unitless	WS₂	WS₂ nanobeam waveguide used for near-field probing of TE0, T	—

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Near-Field Characterisation of Guided Modes in WS₂ Nanobeams and Quasi-Bulk Crystals

Samples

Quasi-bulk WS₂ crystal used as a waveguiding sample for hyperspectral imaging and s-SNOM measurements.

WS₂ nanobeam waveguide used for near-field probing of TE0, TM0, and higher-order guided modes.

Materials

Why these are connected

Characterization

Properties

Simulations

Characterization

Properties

Simulations

Characterization

Properties

Simulations

Characterization

Properties

Simulations