Optical properties of Pr3+ in selenide glasses modified with CsI |
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| Institution: | 1. Department of Materials Science and Engineering, Hankuk Aviation University, Goyang, Gyeonggi 412-791, South Korea;2. Department of Visual Optics, Far East University, Eumsung, Chungbuk 369-851, South Korea;3. Center for Information Materials and Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk 790-784, South Korea;4. Division of Advanced Materials Engineering, Kongju National University, Kongju, Chungnam 314-701, South Korea;5. Basic Research Laboratory, Electronics and Telecommunications Research Institute, Daejeon 305-350, South Korea;1. Department of Physics, Indian Institute of Science, Bangalore, India;2. Department of Material Science and Engineering, Lehigh University, Bethlehem, PA, USA;3. Alfred University, New York State College of Ceramics, Alfred, NY, USA;4. Corning Incorporated, Corning, NY, USA;5. Department of Instrumentation, Indian Institute of Science, Bangalore, India;6. Materials Research Centre, Indian Institute of Science, Bangalore, India |
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| Abstract: | Effects of CsI content on the optical properties of Ge30Ga5Sb5Se60 glasses were evaluated. Linear and non-linear absorption properties of the glasses without Pr3+ were examined in addition to 1.6 μm emission properties of the Pr-doped glasses. Blueshift of the UV-side absorption edge was accompanied with increasing CsI concentration, while non-linear absorption coefficients measured at 1.06 μm by the Z-scan method remained unaffected. Measured lifetimes of the 1.6 μm emission from modified glasses were comparable to those of the unmodified glass. These experimental observations are discussed in connection with a pronounced weak absorption tail appeared in selenide glasses with the addition of CsI. |
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