Double-exposure holographic interferometry with recording a series of overlapped holograms in one recording medium

A method is proposed for recording a series of double-exposure holograms in one recording medium by rotating the medium between the recording cycles and reconstructing the interference patterns characterising a change in the object state in time. The conditions for obtaining interference patterns in fringes of infinite and finite widths are considered. The results of experiments on recording a series of nine double-exposure holograms in an FG-690 holographic film are presented.