Silica masks for improved surface poling of lithium niobate

A. C. Busacca, A. C. Cino, S. Riva Sanseverino, M. Ravaro, and G. Assanto

Electron. Lett. 41, 92-94 (2005)


Surface periodic poling of congruent lithium niobate was performed with the aid of photolithographically defined silica masks. The latter helped improving the control of duty cycle in the periodic domain poling, with 50:50 mark-to-space ratios. The role of silica was ascertained by numerically solving the Poisson equation.