However, the kind-I configuration was frequently utilized for wavelength tunability of SHG due to the fact LN exhibits a significant thermo-optic birefringence with a worth of roughly 4 × ten−five K−one at space temperature. Consequently, a temperature adjust on the machine would cause a considerable variation in the material birefringence, https://emilioelnnm.pointblog.net/lithium-niobate-crystal-no-further-a-mystery-75541735