6533b871fe1ef96bd12d0f1f

RESEARCH PRODUCT

Enhanced Reflectivity Change and Phase Shift of Polarized Light: Double Parameter Multilayer Sensor

Juris PuransIlze AulikaMartins ZubkinsJelena Butikova

subject

Condensed Matter - Materials ScienceMaterials sciencebusiness.industryMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesPhysics::OpticsSurfaces and InterfacesDielectricCondensed Matter PhysicsReflectivitySurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceSemiconductorEllipsometryMaterials ChemistryOptoelectronicsBiomedical sensorsElectrical and Electronic EngineeringbusinessOptics (physics.optics)Physics - Optics

description

Herein, the concept of point of darkness based on polarized light phase difference and absorption of light is demonstrated by simulations using low refractive index and extinction coefficient semiconductor and dielectric, and high refractive index nonoxidizing metal multilayer thin film structures. Several multilayer sensor configurations show great sensitivity to thickness and refractive index variation of the detectable material by measuring the reflectivity ratio {\Psi} and phase shift {\Delta}. Focus is on such multilayers, which have sensitivity to both parameters ({\Psi}, {\Delta}) in the visible spectral range, thus opening the possibility for further research on a new biomedical sensor development with enhanced double parameter sensing.

https://doi.org/10.1002/pssa.202100424