J. Webjorn et al., QUASI-PHASE-MATCHED BLUE-LIGHT GENERATION IN BULK LITHIUM-NIOBATE, ELECTRICALLY POLED VIA PERIODIC LIQUID ELECTRODES, Electronics Letters, 30(11), 1994, pp. 894-895
Periodic poling of z-cut lithium niobate is reliably achieved in 0.2mm
thick samples, patterned with photoresist on one face and subjected t
o pulsed electric fields via liquid electrodes. The acceptance bandwid
th for third order second-harmonic generation reveals that the full 3.
3mm length contributes to the conversion.