Figure 1
From: Reconstruction of non-error magnetic hologram data by magnetic assist recording
A schematic diagram of thermomagnetic recording with the use of MA. (a) Medium such as Bi:RIG magnetized perpendicularly in a single direction. (b) Two incident beams, named signal beam and reference beam, are radiated onto the medium, and the temperature distribution of interference is formed by optical absorption and heating13. The magnetization in the region where the temperature of the medium T exceeds the Curie Temperature T c is lost and (c) reversed by the stray magnetic field (d) during the cooling process to form the magnetic hologram fringe. In the MA recording, the assist magnetic field is applied to the direction of reversed magnetization.
