Analysis of ghost image in high power laser system using computer

Using a self-made software named CatchGhost the ghost points’ position and energy in a coaxial optic systems were calculated accurately in a short time without omission．The software can carry out massive calculation in a short time, and pick out the harmful ghosts in system automatically. Because all the elements which are related to beams’energy, including the pinhole’ effect, reflectivity, gain and loss, are counted, data of ghost points given by the software are exact and useful．