Laser modulation

A holographic image generation system comprising:

• a spatial light modulator having pixels;
• a light source configured to illuminate the spatial light modulator;
• a temporal modulator arranged to modulate an output intensity of the light source over time to encode light from the light source with holographic data representing a hologram at the same time that the spatial light modulator is illuminated by the light from the light source;
• a light sensor associated with the spatial light modulator and configured to receive, from the light source, the light which is arranged to illuminate the spatial light modulator and generate a signal representative of the output intensity of the light source;
• a demodulator connected to the light sensor to receive the signal and decode the signal to obtain the holographic data and connected to the spatial light modulator to set the pixels of the spatial light modulator in accordance with the holographic data to display the hologram ready for illumination by the light source to form a holographic reconstruction,
• wherein the holographic data is representative of a subsequent frame of a video and the temporal modulator is configured to modulate the output intensity to encode the light from the light source with the holographic data representative of the subsequent frame while the light from the light source illuminates the spatial light modulator set with holographic data of a current frame of the video to reconstruct the current frame of the video, wherein the subsequent frame is subsequent the current frame.