Projects per year
Abstract
Insertion of two-dimensional (2D) materials in optical systems modifies their electrodynamical response. In particular, the Brewster angle undergoes an up-shift if a substrate is covered with a conducting 2D material. This work theoretically and experimentally investigates this effect related to the 2D induced current at the interface. The shift is predicted for all conducting 2D materials and tunability with respect to the Fermi level of graphene is evidenced. Analytical approximations for high and low 2D conductivities are proposed and avoid cumbersome numerical analysis of experimental data. Experimental demonstration using spectroscopic ellipsometry has been performed in the UV to NIR range on mono-, bi- and trilayer graphene samples. The non-contact measurement of this modified Brewster angle allows to deduce the optical conductivity of 2D materials. Applications to telecommunication technologies can be considered thanks to the tunability of the shift at 1.55 μm.
Original language | English |
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Article number | 025007 |
Number of pages | 8 |
Journal | 2D Materials |
Volume | 5 |
Issue number | 2 |
DOIs | |
Publication status | Published - 30 Jan 2018 |
Keywords
- 2D conducting materials
- Brewster angle
- conductivity
- graphene
- non-contact measurement
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Dive into the research topics of 'Modified Brewster angle on conducting 2D materials'. Together they form a unique fingerprint.Projects
- 2 Finished
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CÉCI – Consortium of high performance computing centers
Champagne, B., Lazzaroni, R., Geuzaine , C., Chatelain, P. & Knaepen, B.
1/01/18 → 31/12/22
Project: Research
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Equipment
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High Performance Computing Technology Platform
Benoît Champagne (Manager)
Technological Platform High Performance ComputingFacility/equipment: Technological Platform
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HeteroNanoCarb 2017
Luc Henrard (Contributor)
11 Dec 2017 → 15 Dec 2017Activity: Participating in or organising an event types › Participation in conference
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Super absorbers: a metamaterial approach
Luc Henrard (Supervisor)
25 Nov 2016Activity: Examinations › Jury