On the possibility of visualization of relief of rough surfaces via laser induced thermal emission

Kateryna Zelenska; Olga Tkach; Serge Zelensky; Olexandr Kolesnik; Toru Aoki

doi:10.1117/12.2616236

27 October 2021 On the possibility of visualization of relief of rough surfaces via laser induced thermal emission

Kateryna Zelenska, Olga Tkach, Serge Zelensky, Olexandr Kolesnik, Toru Aoki

Proceedings Volume 11927, Optical Technology and Measurement for Industrial Applications Conference 2021; 1192705 (2021) https://doi.org/10.1117/12.2616236
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

Computer simulation is performed for pulsed laser heating of a surface with submicrometer-sized truncated-coneshaped peaks and holes. Transient temperature field is calculated, and the visual appearance of the surface roughness elements is modeled with the laser-induced thermal emission. The results of calculations reveal special features in visual appearance of peaks on the surface which opens a possibility to distinguish between different surface elements. The calculations also predict 20 fold variations of local thermal emission radiant exitance of rough surfaces. The experiments confirm the presence of the exitance variations on rough surfaces of carbon materials.

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Kateryna Zelenska, Olga Tkach, Serge Zelensky, Olexandr Kolesnik, and Toru Aoki "On the possibility of visualization of relief of rough surfaces via laser induced thermal emission", Proc. SPIE 11927, Optical Technology and Measurement for Industrial Applications Conference 2021, 1192705 (27 October 2021); https://doi.org/10.1117/12.2616236

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