Application analysis of angular dispersion Fabry-Perot velocity interferometry

A fixed-cavity angular dispersion Fabry-Perot velocity interferometer was developed by applying a solid etalon to realize that this interferometer's structure was compact,the interference fringes obtained by it were adjustment-free and its fringe constant could be easily and accurately calibrated.This interferometer was used in the experiment with an electric gun to accelerate a 10-mm-diameter,0.25-mm-thick Mylar flyer.The interferometer gave good results even when the intensity of light reflected from the target changed 100 times.The measurement accuracy of the system was analyzed by taking account of etalon thickness error,unparallel etalon surfaces,fringe broadening,image aberration,and so on.And the velocity resolution and the temporal resolution were also analyzed.