What Is a Spatial Light Modulator?

The spatial light modulator refers to the active control, which can modulate a certain parameter of the light field by liquid crystal molecules, for example, by modulating the amplitude of the light field, modulating the phase by the refractive index, and modulating the polarization state by the rotation of the polarization plane, Non-coherent-the conversion of coherent light, so that certain information is written into the light wave to achieve the purpose of light wave modulation. It can conveniently load information into a one-dimensional or two-dimensional light field, and use the advantages of wide bandwidth of light and multi-channel parallel processing to quickly process the loaded information. It is the core component of real-time optical information processing, optical interconnection, and optical computing systems.