PHASE MEASUREMENT OF OPTICAL WAVEFRONT BY USING AN SLM KNIFE-EDGE FILTER

摘要

A system that uses an SLM knife-edge filter to measure the phase of an optical wavefront is proposed. The pattern, position and orientation of the filter can be controlled electrically. This system measures the phase derivative of a wavefront passing through a transparent phase object is measured. The 3D shape of the object can be calculated by integrating the phase derivative.