Abstract
A hyperbolic model of non-Fourier heat conduction with non-uniform heatsource is used to simulate the transient heat transfer in ahigh-pulse-pumped solid-state laser medium. The temperature fields arenumerically analysed using the finite difference method combined withthe TDMA algorithm for different pump power densities, pulse durations,thermal relaxation time and cooling intensities, respectively. Thecalculated results are compared with those predicted by the parabolicheat conduction model based on the Fourier law. The results indicatethat the non-Fourier heat conduction phenomenon in laser media should beconsidered when the pump power density exceeds 104 W/m2 or under lowpulse duration. In addition, the conditions of non-Fourier effects andtheir influencing factors are analysed.
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