Dynamic optical interferometry controller for e.g. determining qualitative and quantitative distortion differences or gradients of surface, has acousto-optic modulator which controls laser beam of continuous wave laser

摘要

The controller (1) has acousto-optic modulator (AOM) (5) which dynamically controls the laser beam of continuous wave lasers (cw-laser). A stroboscopic lighting can be realized through the dynamic control of the laser beam, synchronized with the excitation frequency of a piezoshaker (8) at the object.