Semiconductor Physics, Quantum Electronics & Optoelectronics, 26 (2), P. 201-207 (2023).
Laser-induced thermal emission of carbon microparticles on transparent heat-sink substrates
1Taras Shevchenko National University of Kyiv, Faculty of Physics Abstract.
Thermal emission is an informative tool to study materials’ properties at high temperatures under laser irradiation. The kinetics decay of laser-induced thermal emission from carbon microparticles deposited on heat-sink surfaces of transparent dielectrics (glass and sapphire) was studied. A Q-switched YAG:Nd3+ laser (pulse duration τi = 20 ns, energy/power density 0.5 J·cm–2, 25 MW·cm–2) was employed to excite thermal emission. In calculations, the classical heat conduction equation was used. With increasing the thermal conductivity of substrate (from glass to sapphire), reduction in the emission pulse duration has been observed.
Keywords:laser-induced thermal emission, carbon microparticles, heat-sink substrate. This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
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