Due to its IR-SLD light source and a specially modified optical setup, the FRT CWL HR delivers the highest lateral resolution and the smallest measuring spot of all CWL sensors. It works by the principle of chromatic aberration. This non-destructive method works equally reliable on surfaces with high and low reflectivity. The CWL HR is used for the characterization of structure sizes in the lateral micrometer and vertical sub-micrometer range. Typical applications are found in the semiconductor, MEMS and nanotechnology industries. |