Implementation of high resolution diffractive optical elements on coupled phase and amplitude spatial light modulators

International audienceWe propose the optical implementation of diffractive optical elements onto electrically addressed liquidcrystal spatial light modulators. We compare the classic implementations onto amplitude-only or phaseonly domains with the implementations onto coupled phase and amplitude _spiral_ domains. We demonstrate that the coupling between amplitude and phase provides a trade-off between diffraction efficiency and the signal-to-noise ratio in the reconstruction. Furthermore, when investigating the influence of the maximum dephasing on phase domains and spiral domains through the use of optimal trade-off design, we show that phase-only domains with limited maximum dephasing can provide satisfactory performance. Finally, optical implementations are provided