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Optical Properties of Photo-thermo-refractive Glass for Volume Bragg Gratings

ORAL

Abstract

Photo-thermo-refractive (PTR) glass is used to fabricate volume Bragg gratings. The gratings are formed by exposing PTR glass to UV light interference patterns and then annealing the glass. This produces a grating by locally modulating the refractive index. The diffraction efficiency of these gratings is dependent on the refractive index modulation amplitude. We report the refractive indices of unprocessed and processed PTR glass at wavelengths from 0.4 to 4.6 microns and discuss their uses in specifying VBGs for laser beam combining.

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Authors

  • Zayne Parsons

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

  • 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

  • Clemens Winkelmann

    University of Michigan, Department of Physics \& Astronomy, Michigan State University; CREATE for STEM Institute, Department of Physics \& Astronomy, Michigan State University, Kettering University, Kent State University - Physics, Kent State University - Chemistry, Institute for Physics, Martin-Luther-Universitaet, Halle, Germany, Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA, IPG Photonics, 50 Old Webster Rd., Oxford, MA 01540, OptiGrate, 562 S. Econ Circle, Oviedo, FL 32765, Northrop Grumman Synoptics, 1201 Continental Blvd., Charlotte, NC 28273, University of Toledo, The University of Toledo, Toledo, OH, Case Western Reserve University, Clarkson University, Univ of Dayton, Australian Ntl Univ, U.S. Army Combat Capabilities Dev Command - Armament Ctr, Wayne State University, The University of Akron, Institute of Physics, University of Belgrade, University of Wisconsin Oshkosh, Néel Institute, Grenoble, France

  • Clemens Winkelmann

    University of Michigan, Department of Physics \& Astronomy, Michigan State University; CREATE for STEM Institute, Department of Physics \& Astronomy, Michigan State University, Kettering University, Kent State University - Physics, Kent State University - Chemistry, Institute for Physics, Martin-Luther-Universitaet, Halle, Germany, Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA, IPG Photonics, 50 Old Webster Rd., Oxford, MA 01540, OptiGrate, 562 S. Econ Circle, Oviedo, FL 32765, Northrop Grumman Synoptics, 1201 Continental Blvd., Charlotte, NC 28273, University of Toledo, The University of Toledo, Toledo, OH, Case Western Reserve University, Clarkson University, Univ of Dayton, Australian Ntl Univ, U.S. Army Combat Capabilities Dev Command - Armament Ctr, Wayne State University, The University of Akron, Institute of Physics, University of Belgrade, University of Wisconsin Oshkosh, Néel Institute, Grenoble, France