Abstract

Second order susceptibility χ⁽²⁾ have been induced in different thermally poled glasses [1]. It is mainly due to coupling of the third order glass susceptibility χ⁽³⁾ with a built in electric field E_int (χ⁽²⁾~χ⁽³⁾E_int). We have recently shown that electron-hole pairs produced by one or two-photon absorption screen E_int and explain the decay of the χ⁽²⁾ thermally induced in borophosphate glasses [2]. Here we demonstrate for the first time that this general phenomena allow to tailor the spatial profile of second order susceptibility induced in a thermally poled fused silica and borophosphate glasses.

© 2000 IEEE