Dispersion compensation for digital micromirror device with a low energy loss

We propose an energy-efficient dispersion compensation method, based on a dispersive prism, for DMD. This method first simulates the diffraction of the optical field reflected from the DMD with an angular spectrum model. According to the simulation, a prism and a set of optical components are introduced to compensate for the angular dispersion of DMD-modulated optical fields. In the experiment, our method reduced the angular dispersion, between the 532 nm and 660 nm light beams, by a factor of ∼8.5.