@article{Protektor_Lisin_2022, title={Simulation of Heat Transfer in Single-Crystal Lithium Niobate in Interaction with Continuous-Wave Laser Radiation}, url={https://periodicals.karazin.ua/eejp/article/view/18432}, DOI={10.26565/2312-4334-2022-1-02}, abstractNote={<p>The paper presents the simulation results of heat transfer in single-crystal lithium niobate (LiNbO<sub>3</sub>) in the form of cylinder of diameter mm and height mm in interaction with continuous-wave laser radiation with the output power of W and the wavelength of nm. The density of the LiNbO<sub>3</sub> crystal is kg/m<sup>3</sup>; the thermal conductivity along the [001] direction is W/(m×K); the thermal conductivity in the (001) plane is W/(m×K); the specific heat at constant pressure is J/(kg×K); the absorption coefficient is %/cm @ 1064 nm. The laser beam propagates along the optical axis of the crystal. The laser beam intensity profile is represented as a Gaussian function, and the absorption of laser radiation of the single-crystal lithium niobate is described by Beer-Lambert’s law. The numerical solution of the non-stationary heat conduction problem is obtained by meshless scheme using anisotropic radial basis functions. The time interval of the non-stationary boundary-value problem is 2 h 30 min. The results of numerical calculations of the temperature distribution inside and on the surface of the single-crystal lithium niobate at times s are presented. The time required to achieve the steady-state heating mode of the LiNbO<sub>3</sub> crystal, as well as its temperature range over the entire time interval, have been determined. The accuracy of the approximate solution of the boundary-value problem at the <em>n</em>-th iteration is estimated by the value of the norm of relative residual . The results of the numerical solution of the non-stationary heat conduction problem obtained by meshless method show its high efficiency even at a small number of interpolation nodes.</p&gt;}, number={1}, journal={East European Journal of Physics}, author={Protektor, Denys O. and Lisin, Denys O.}, year={2022}, month={Mar.}, pages={10-15} }