Laser light absorption on molten metal

Laser light absorption on molten metal Light absorption at high temperatures is highly impacted by interband absorption in addition to intraband absorption. When light interacts with a surface, it can be reflected, transmitted, or absorbed. In the context of laser beam material processing, transmission is generally not a factor. However, the amount of energy absorbed is crucial for both the effectiveness of the processing and its energy efficiency. Reflected energy does not contribute to the processing. Absorption depends on the light wavelength and surface characteristics. However, the impact of high temperatures on absorption values and mechanisms is not well understood yet, although many manufacturing processes operate in those regimes.