Thermally poled new borate glasses for second harmonic generation

Second harmonic generation (SHG) in poled glasses opens new opportunities i n material research and device development for optics. Within this context (1-x)LaMgB5O10-xTiO(2) and (1 -x)LaMgB5O10-xNb(2)O(5) (0 less than or equal tox less than or equal to0.4) glasses have been formed and characterized. The structure of unpoled glasses has been studied by IR, Raman, and XAFS sp ectroscopies. Optical properties of transmission like linear refractive ind exes and third-order non-linear optical susceptibility chi ((3)) have been investigated. A second harmonic signal was observed for each thermally pole d composition, except for the LaMgB5O10 matrix glass. (C) 2001 Elsevier Sci ence B.V. All rights reserved.