Surface analyzers using Laser

ABSTRACT

The accurate characterization of surface texture has become increasingly important in the semiconductor, data storage, automotive and biomedical industries. Surface texture is a key factor affecting the function and reliability of a component. Its measurement and analysis can prove to be an excellent diagnostic tool for monitoring the process that produced the surface in question. Stylus measurements are widely used for surface roughness, but they lack lateral resolution due to the tip geometry. They also may cause surface damage due to high forces exerted on the surface. Characterization of surfaces using light scattering systems has several advantages over traditional stylus profiling techniques. Optical profilers offer quick measurement of surface features without surface contact. The precision and repeatability of today’s surface profiling instruments, along with extensive analysis software, enable the area of divergence from acceptable manufacturing norms for surface texture to be pinpointed.