%0 Journal Article %A Dussauze, M.%A %A Kamitsos, Efstratios I.%A %A Fargin, E.%A %A Rodriguez, V. %D 2009 %T Refractive index distribution in the non-linear optical layer of thermally poled oxide glasses %J Chemical Physics Letters %V 470 %@ 0009-2614 %R 10.1016/j.cplett.2009.01.007 %I Elsevier BV %P 63–66 %N 1–3 %U https://hdl.handle.net/10442/12698 %X Large refractive index variations have been recorded by combining micro-infrared reflectance spectroscopy with simulations of interference fringes measured at the anode side of thermally poled sodium-rich boro-phosphate-niobate glasses. The method developed in this work is effective for probing the spatial distribution and depth-profile of refractive index in the non-linear optical layer. It was found that the refractive index decreases and the molar volume increases with thermal poling, leading to a net increase in molecular electronic polarizability in the non-linear optical layer of the poled glass. %> Αποθετήριο Ήλιος / ΕΙΕ