CHARACTERISTICS OF RECORDING FAST PROCESS ES IN PARTIALLY COHERENT-LIGHT

The feasibility of recording partially coherent holograms with planar focusing is demonstrated theoretically and experimentally for an objec t which is displaced during exposure by a distance considerably greate r than the wavelength. The feasibility of formation of such holograms is justified on the basis of the recording configuration. The dependen ce of the resolution in an image reconstructed from a hologram of this kind on the vibration amplitude is calculated and supported by experi ment. The unique nature of recording partially coherent holograms with planar focusing lies in its low sensitivity to the displacements of a n object during exposure, The insensitivity to these displacements mak es such partially coherent holography similar to conventional photogra phy, but different from classical homography which can only be used to record an object if the displacements are of the order of one wavelen gth.