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Laser Surface Treatment And Laser Marking (part 2)
Aug 14, 2018

Laser surface texturing and laser marking analysis

Laser marking has important applications by changing the laser marking surface area in a manner that visually contrasts with the unmarked area. Not only do we list some of the early results, but we also use advanced analytical methods to provide in-depth characterization and characterization of laser texturing processes on metal and glass surfaces.

The pen surface profilometer is perhaps the most famous and widely used technique for measuring relevant data. Therefore, this technology was selected for preliminary evaluation of laser processing. Surface morphology is a qualitative and quantitative description of more common surface properties and shapes, and imaging techniques are more useful here. Thus, two-dimensional and three-dimensional images of a confocal laser scanning microscope were selected.

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Figure 1:Reflection of bare aluminum materials processed with high peak power, sub-nanosecond fiber lasers

Advanced spectrophotometers are widely used to quantify surface colors. This can be achieved by analyzing the reflected light from multiple points on the visible spectrum, whether or not it contains highlights, to form a unique reflection curve that reflects the characteristics of each surface. These instruments are also widely used to measure the L* value of the surface or the depth of the surface color. Now, this technology is an indispensable tool for quantifying the effectiveness of laser marking on a variety of consumer products. These reflection curves and L* values were used to quantify the utility of high peak power, short pulse fiber lasers (Figure 1) on three challenging materials, aluminum, copper and glass.