Application of the digital holographic interference microscope for thin films investigation

We used the digital holographic interference microscope (DHIM) for thin films investigation. Three-dimensional (3-D) image of A1N thin film deposited on an acryl substrate by vacuum-arc method .and the results of the film thickness measurement are presented. It has been shown that the DHIM can be successfully used for film surface quality control, thickness and film damages parameters measurement.