Recording of one-dimensional holograms in MnBi films

A new system of holographic recording on moving MnBi film is described. The data to be stored are recorded in a track of non-overlapping 1-d Fourier holograms. A cavity-dumped argon laser is used for writing. The feasibility of this new system has been demonstrated by writing and erasing tracks consisting of 20 μm by 2 μm holograms. A maximum bit density of 10⁷ bit/cm² and a writing data rate of 10⁸ bit/s should be attainable with such a system.