However, the sort-I configuration was often utilized for wavelength tunability of SHG simply because LN reveals a substantial thermo-optic birefringence by using a value of about four × ten−five K−1 at room temperature. So, a temperature change with the unit would lead to a substantial variation in the material birefringence, https://lukasbgfcq.bloggip.com/32501368/the-single-best-strategy-to-use-for-lithium-niobate-crystal