Locating ghost images in high power laser system with mirror imaging method

In high power laser systems,ghost light can be so strong to damage optical elements,air may be ionized,resulting in the quality of light going bad.There fore,it is rather important to locate the ghost images and to calculate the intensity of ghost images quantitatively.The method of mirror imaging is introduced to deal with the multi-axial optical system,that is,all elements are imaged to axis of one element,after analysize the ghost image of the equivalent optical system,then the ghost images are imaged to the original multi-axial optical system.