The first demonstration of surface periodic poling of lithium tantalate at high voltages is reported. Periodic domain inversion with mark-to-space ratios close to the optimum 50:50 was successfully achieved down to micrometre periods with good uniformity and repeatability.
Busacca AC, Santini CA, Sanseverino SR, Parisi A, Cino AC, Oliveri RL, et al. (2006). Surface periodic poling in congruent lithium tantalate RID C-6421-2011. ELECTRONICS LETTERS, 42(9), 546-547 [10.1049/e1:20060518].