Spectral-envelope modulated double-phase method for computer-generated holography.Computer-generated holography provides an approach to modulate the optical wavefront with computationally synthesized holograms.  Here, a spectral-envelope modulated double-phase method is proposed to suppress the spatial-shifting noise with an off-axis envelope modulation on the Fourier spectrum of a double-phase hologram. 
Spectral-envelope modulated double-phase method