SPATIAL LIGHT MODULATOR, OPTICAL MODULATION DEVICE AND METHOD FOR DRIVING SPATIAL LIGHT MODULATOR

摘要

To provide: a spatial light modulator capable of reducing fluctuation occurring in light after modulation; and an optical modulation device; and a method for driving a spatial light modulator.SOLUTION: An SLM 4A includes a modulation part 40A and a drive circuit 41. The modulation part 40A having a plurality of pixels 40a modulates the phase or intensity of incident light Laccording to the amplitude of a drive signal periodically time-varying for each pixel 40a. The drive circuit 41 providing the drive signal to the modulation part 40A is controlled so as to reverse the phase of a drive signal V(t) provided to a pixel group 401 in the plurality of pixels 40a and the phase of a drive signal V(t) provided to a pixel group 402 in the plurality of pixels 40a to each other.SELECTED DRAWING: Figure 1