Optical and structural properties of new chalcohalide glasses |
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| Authors: | M Guignard V Nazabal A Moreac S Cherukulappurath G Boudebs H Zeghlache G Martinelli Y Quiquempois F Smektala J-L Adam |
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| Institution: | 1. UMR CNRS 6512 Laboratoire Verres et Céramiques, Institut de Chimie de Rennes, Université Rennes 1, 35 042 Rennes cedex, France;2. UMR CNRS 6626, Université, GMCM, Rennes 1, 35042 Rennes Cedex, France;3. UMR CNRS 6136 Laboratoire POMA, Université d’Angers, 49045 Angers, France;4. UMR CNRS 8523 Laboratoire de PhLAM, Université Lille 1, 59 655 Villeneuve d’Ascq cedex, France;1. Chinese Academy of Sciences (CAS) and Shanghai Institute of Optics and Fine Mechanics, Shanghai, China;2. J.J. Thomson Physical Laboratory, University of Reading, Reading, UK;3. Shanghai Institute of Optics and Fine Mechanics, Shanghai, China |
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| Abstract: | New class of chalcohalide glasses has been prepared in the GeS2–In2S3–CsI system with regard to their potential non-linear properties. The study of glass-forming region was undertaken to select glassy compositions, which present high non-linear (NL) optical properties with a low two-photon absorption. Thermal analyses, structural examination by Raman spectroscopy, non-linear optical measurements were investigated as a function of CsI contents. Introduction of CsI has shifted the band-gap edge towards the blue region of the absorption optical spectrum and therefore has limited the two-photon absorption. Their NL refractive index n2 are 60 times higher than silica glasses without any NL absorption. Moreover, second harmonic signal was observed in thermally poled samples similar to silica glass. However, this second order non-linearity is not temporally stable. |
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