Spectro-ellipsometric surface plasmon resonance sensor using a liquid crystal achromatic waveplate

Ibrahim Watad, Marwan J. Abuleil, Ibrahim Abdulhalim

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Wavelength dependence of phase modulators has been one of the main challenges in spectroscopic ellipsometry/polarimetry (EP) which significantly complicates signals analysis. A known approach to overcome this complication is using rotatable polarizers. However, the use of rotatable polarizers induces mechanical vibrations and unnecessary errors to the system. In this work, a novel spectroscopic configuration to extract the spectral changes of the EP parameters applied to surface plasmon resonance (SPR) sensing is presented. The setup utilizes the integration of a recently developed achromatic variable liquid crystal waveplate to the SPR in Kretschmann-Raether configuration and using three phase shifts to extract the EP parameters of the SPR sample.

    Original languageAmerican English
    Article number9050495
    Pages (from-to)550-553
    Number of pages4
    JournalIEEE Photonics Technology Letters
    Volume32
    Issue number9
    DOIs
    StatePublished - 1 May 2020

    Keywords

    • Surface plasmon polaritons
    • optical sensors
    • spectroscopic ellipsometry
    • thin films

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Electrical and Electronic Engineering

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