However, the type-I configuration was usually employed for wavelength tunability of SHG because LN exhibits a significant thermo-optic birefringence with a price of approximately four × ten−five K−1 at space temperature. As a result, a temperature modify from the product would bring about a substantial variation in the fabric birefringence, https://holdenxdghh.ampblogs.com/lithium-niobate-crystal-an-overview-69200246