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Polarization modulation by vanadium dioxide on metallic substrates

Title:

Polarization modulation by vanadium dioxide on metallic substrates

Truong, Vo-Van ORCID: https://orcid.org/0000-0003-3535-3749, Son, Tran Vinh, Do, Phuong Anh, Bader, George and Haché, Alain (2018) Polarization modulation by vanadium dioxide on metallic substrates. Optics Communications . ISSN 00304018 (In Press)

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Official URL: http://dx.doi.org/10.1016/j.optcom.2018.07.010

Abstract

Vanadium dioxide (VO2) undergoing phase transition is known alters the polarization state of light in reflection owing to large changes in complex refractive indices. While this effect is promising for optical modulation applications, the usual VO2 films on dielectric substrates tend to offer limited tunability for polarization modulation. In this paper, we show that metallic under-layers greatly enhance the performance by widening the spectral range and include visible wavelengths, by increasing the polarization modulation amplitude, and by widening the range of workable incidence angles. The imaginary part of the refractive index in the metallic layer is found to increase the relative phase shifts between s- and p-components of polarization as well as increasing the reflectance.

Divisions:Concordia University > Faculty of Arts and Science > Physics
Item Type:Article
Refereed:Yes
Authors:Truong, Vo-Van and Son, Tran Vinh and Do, Phuong Anh and Bader, George and Haché, Alain
Journal or Publication:Optics Communications
Date:2018
Digital Object Identifier (DOI):10.1016/j.optcom.2018.07.010
Keywords:Vanadium dioxide; Phase transition material; Polarization control; Light modulator; Phase control
ID Code:984035
Deposited By: ALINE SOREL
Deposited On:11 Jul 2018 19:49
Last Modified:11 Jul 2018 19:49

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