The Anisotropic Thermal Expansion of Non-linear Optical Crystal BaAlBO₃F₂ Below Room Temperature.

ABSTRACT: Thermal expansion is a crucial factor for the performance of laser devices, since the induced thermal stress by laser irradiation would strongly affect the optical beam quality. For BaAlBO₃F₂ (BABF), a good non-linear optical (NLO) crystal, due to the highly anisotropic thermal expansion its practical applications are strongly affected by the "tearing" stress with the presence of local overheating area around the laser spot. Recently, the strategy to place the optical crystals in low-temperature environment to alleviate the influence of the thermal effect has been proposed. In order to understand the prospect of BABF for this application, in this work, we investigated its thermal expansion behavior below room temperature. The variable-temperature XRD showed that the r

SUBMITTER: Jiang X 

PROVIDER: S-EPMC6033077 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature