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Temperature-assisted electrical poling of TeO2-Bi2O3-ZnO glasses for non-linear optical applications |
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| Authors: | G Senthil Murugan V Rodriguez M Couzi P Le Coustumer |
| Institution: | a I.C.M.C.B (UPR CNRS 9048), Chat. Brivazac, Avenue du Dr Schweitzer, 33608 Pessac cedex, France b L.P.C.M., Université de Bordeaux I, UMR 5803 CNRS, 33405 Talence cedex, France c C.D.G.A, Université Bordeaux I, B.18, Av. des facultés, 33405 Talence cedex, France |
| Abstract: | The suitability for effective thermal poling of the ternary tellurite glasses with the compositions (100 − 2x)TeO2-xBi2O3-xZnO (x = 5, 10 and 15, in molar percentage) for the second harmonic generation (SHG) was analyzed. The glass transitions and crystallization temperatures were studied via differential thermal analysis. The structural properties of the annealed glasses and furtherly heat-treated samples were probed by extended X-ray absorption fine structure (EXAFS) spectroscopy. Thermal poling of the glasses was undertaken conventionally at various temperatures close to the glass transition temperature under high vacuum and the second harmonic generated signals were compared. A new technique of two stage poling was tested for comparison. The non-linear second harmonic signal of the poled glasses was analyzed using the Maker-fringe technique and it was found that the two stage poling enhanced the non-linear efficiency when compared to the conventionally poled samples. |
| Keywords: | C290 D200 S117 T110 T150 |
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