GaAs MESFET 16 × 16 crosspoint switch at 1700 Mbits/sec
C.J. Anderson, J.H. Magerlein, et al.
GaAs IC 1987
In this paper the first experiment of thermomagnetic writing of a hologram on a thin film of EuO and the reconstruction of the hologram is reported. Writing of the hologram is achieved by using a giant pulsed ruby laser as a source for thermomagnetization. Erasing of the hologram is accomplished by a small applied magnetic field. The ruby laser is used because of its ability to provide the energy required for writing in a time that is short compared with the thermo-relaxation time. A hologram with shallow angle (10 μ resolution) was recorded and the reconstruction of the hologram was done using a HeSingle Bond signNe laser as a source. The formation of the hologram is based on the fact that the index of refraction of the material is a function of magnetization. Thus, the different state of magnetization induced by the laser pulse acts as a phase-hologram for polarized light. Polarizing elements were used to observe the reconstructed images from the magnetic holograms. Results were also obtained for the diffraction intensity in the different orders of a simple thermo-magnetic hologram. An analysis is presented to interpret the observed phenomena and gives the calculated efficiency that can be obtained under ideal conditions. © 1969 The American Institute of Physics.
C.J. Anderson, J.H. Magerlein, et al.
GaAs IC 1987
G. Fan, J.H. Greiner
Journal of Applied Physics
K. Pennington, J.S. Harper, et al.
Applied Physics Letters
G. Fan, E. Donath, et al.
IEEE Transactions on Electronic Computers