optical properties of some laser crystals

摘要

in the following work the results of tempera- ture dependence refractive indices measurements, thermooptical coefficients and dispersion in a wide range of temperature are presented. For measurements of re fractive indices the least deviation method was em- ployed. The measurements were carried out in the tem- perature region of 20500℃ C for BBO crystals and 20600℃ C for LBO crystals. It is revealed that the char- acter of the refractive indices change in these crystals is different although the refractive indices of both crystals decrease while temperature increases. Whereas the tem- perature dependence of refractive indices in Ba B2O4` is practically linear, the same temperature dependence in LiB3O5 has more complicated character. It contains some particular features of refractive indices dispersion and thermooptical coefficients.