Determination of the optical and the thermal properties of an absorbing medium by using infrared thermometry
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- 作者：Seung-Jin Yang ; Jun-Hyeok Baek ; Seung-Eun Kim…
- 关键词：Laser applications ; Absorbing medium ; Frequency ; doubled Nd ; YAG laser ; Thermal effects ; Numerical simulation
- 刊名：Journal of the Korean Physical Society
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：69
- 期：12
- 页码：1744-1749
- 全文大小：
- 刊物主题：Physics, general; Theoretical, Mathematical and Computational Physics; Particle and Nuclear Physics;
- 出版者：The Korean Physical Society
- ISSN：1976-8524
- 卷排序：69
文摘
Spatiotemporal changes in the surface temperature of an absorbing medium irradiated by using 532-nm laser pulses were measured using an infrared camera. Relevant numerical simulations of the heat transfer equation were performed. The simulations showed that the maximum temperature increase was linearly proportional to the absorption coefficient with no dependence on the thermal conductivity and that the decay time constant depended on both the absorption coefficient and the thermal conductivity. The absorption coefficient and the thermal conductivity of the medium were determined by fitting the simulated results for the maximum temperature increase and decay time constant to the measured results.