Stéphane Larouche

Design and plasma deposition of dispersion-corrected multiband rugate filters

Inverse Fourier transform method has been commonly used for designing complex inhomogeneous optical coatings. Since it assumes dispersion-free optical constants, introducing real optical materials induces shifts in the position of reflectance bands in multiband inhomogeneous minus (rugate) filters. We propose a simple method for considering optical dispersion in the synthesis of multiband rugate filter designs. Model filters designed with this method were fabricated on glass and polycarbonate substrates by plasma-enhanced chemical vapor deposition of silicon oxynitrides and SiO2/TiO2 mixtures with precisely controlled composition gradients.

Evidence of valence band perturbations in GaAsN/GaAs(001): Combined variable-angle spectroscopic ellipsometry and modulated photoreflectance investigation

The contribution of the fundamental gap

Experimental and theoretical studies of theE+optical transition inGaAsNalloys

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Step method: a new synthesis method for the design of optical filters with intermediate refractive indices

as well as those of the

Use of metameric filters for future interference security image structures

{text{E}}_{ensuremath{-}}+{ensuremath{Delta}}_{text{so}}

Optical filters with prescribed optical thickness and refined refractive indices.

and

OpenFilters: An Open Source Software for the Design and Optimization of Optical Coatings

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Plasma deposition of anti-reflective coatings on spherical lenses

transitions to the dielectric function of

Experimental and theoretical studies of the E+ optical transition in GaAsN alloys

{text{GaAs}}_{1ensuremath{-}x}{text{N}}_{x}(001)

Optical Filters with Constant Optical Thickness and Refined Refractive Indices

alloys were determined from variable-angle spectroscopic ellipsometry and modulated photoreflectance spectroscopy analyses. The oscillator strength of the