Verdet Constant Measurements for Terbium Gallium Garnet and Potassium Terbium Fluoride

ORAL

Abstract

Terbium Gallium Garnet (TGG) and Potassium Terbium Fluoride (KTF) are materials used as optical isolators which prevent feedback to the pump laser via the Faraday effect. The Verdet constant is a measure of the strength of the Faraday Effect which is the rotation of the plane of polarization of light in a magnetic field. The Verdet constant was measured by exposing samples of TGG and KTF to a magnetic field as a linearly polarized He-Ne laser beam passed through the samples. To determine the Verdet constant, the change of direction of the linear polarization was measured as a function of the magnetic field and determined the Verdet coefficients of TGG and KTF.

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Authors

  • Michael Mueller

    • University of Dayton, Department of Physics, Dayton, Ohio 45469; Air Force Research Laboratory, AFRL/RXAP, Wright Patterson AFB, OH 45433

  • Said Elhamri

    • University of Dayton, Department of Physics, Dayton Ohio, 45469; Air Force Research Laboratory, AFRL/RXAN, Wright-Patterson AFB, Ohio 45433-7707, USA
    • University of Dayton, Department of Physics, Dayton, Ohio 45469; Air Force Research Laboratory, AFRL/RXAP, Wright Patterson AFB, OH 45433

  • David Zelmon

    • Air Force Research Laboratory, AFRL/RXAP, 3005 Hobson Way, Wright-Patterson AFB, Ohio 45433-7707, USA
    • Materials and Manufacturing Directorate, Air Force Research Laboratory, AFRL/RXAP, 2179 12th St., Rm. 122, Wright Patterson AFB, OH 45433

  • Kevin Stevens

    • Northrop Grumman Synoptics, 1201 Continental Blvd., Charlotte, NC 28273

  • Greg Foundos

    • Northrop Grumman Synoptics, 1201 Continental Blvd., Charlotte, NC 28273