Optical rotatory-dispersion-type spatial light modulator and characteristics of the modulated light

Among known temporal-spatial light modulation methods, there is no realistic method that can precisely control a light pulse simultaneously in the temporal and spatial domains. By careful consideration of the symmetries and topological properties of electromagnetic waves, a novel spatial light modulator has been developed to create different far-field patterns for each wavelength of linearly polarized light composed of various wavelength components. The system consists of an optical rotatory dispersion device, which is like a Faraday rotator, and a spatial light modulator with parallelalignment nematic liquid-crystal cells. Numerical simulation results show the effectiveness of this new spatial light modulation method.