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

Christophe Stolz (1) , Laurent Bigue (2) , Pierre Ambs (2)

1 Le2i - Laboratoire Electronique, Informatique et Image [UMR6306]
2 MIPS - Modélisation, Intelligence, Processus et Système

We 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.

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Christophe Stolz, Laurent Bigue, Pierre Ambs. Implementation of high resolution diffractive optical elements on coupled phase and amplitude spatial light modulators. Applied optics, 2001, 40 (35), pp.6415-6424. ⟨10.1117/12.504948⟩. ⟨hal-00955421⟩