The Influence of Laser Pulse Duration on the Kinetics of Laser-Induced Thermal Emission of Porous Carbon Materials

Authors

DOI:

https://doi.org/10.15407/ujpe70.5.297

Keywords:

laser-induced thermal emission, kinetics, porous carbon

Abstract

The shape of pulse signals of laser-induced thermal emission of porous carbon material is studied with the duration of laser excitation pulses varied from 20 to 40 ns. It is found that the amplitude and duration of thermal emission pulses depend significantly on the duration of laser pulses. In particular, an increase in the duration of the emission pulses from 70 to 200 ns is recorded, which is caused by changes in the temperature distribution with depth in the surface layer of the irradiated material. Computer modeling of the processes of pulsed laser heating and of the formation of thermal emission signals is carried out. The simulation results show satisfactory agreement with the measurement results.

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Published

2025-06-04

Issue

Section

Optics, atoms and molecules

How to Cite

The Influence of Laser Pulse Duration on the Kinetics of Laser-Induced Thermal Emission of Porous Carbon Materials. (2025). Ukrainian Journal of Physics, 70(5), 297. https://doi.org/10.15407/ujpe70.5.297

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