Magnetophotonic Microcavity with Magneto- and Electro-Optic Thin Films for Voltage Controllable Magneto-Optic Spatial Light Modulators

摘要

Magneto-optic spatial light modulators (MOSLMs), which are real-time programmable micro devices for modulating the amplitude and/or phase of two-dimensional optical signals at a high speed, are attractive optical devices for several applications including holographic data storage and 3-dimensional display. The MO modulation is basically carried out by controlling the direction of magnetization in ferromagnetic garnet films by applying a local magnetic field with current lines. Current intensity in such devices is, however, considerably high and they are always suffered with heating problems. To avoid this, multiferroic operation of MOSLM, in which the direction of magnetization is controlled not by the current for local field application but by stresses cased by piezoelectric effects, is one of the good solutions.