Abstract : We describe a simple technique for the determination of the complex transmittance of a spatial light modulator. The technique uses the variation of the diffraction efficiency of Ronchi gratings imprinted on the SLM, as a function of the grating contrast. The measurement is made on the central peak of the diffraction structure with a monopixel detector only. The technique can also be used in quasi real time in order to adjust the SLM in the expected working regime (phase only modulation for example)
https://hal-iogs.archives-ouvertes.fr/hal-00673975 Contributor : Marie-Laure EdwardsConnect in order to contact the contributor Submitted on : Friday, March 30, 2012 - 2:06:34 PM Last modification on : Saturday, June 25, 2022 - 11:07:52 AM Long-term archiving on: : Wednesday, December 14, 2016 - 7:13:07 PM
Philippe Delaye, Gérald Roosen. Simple technique for the determination of the complex transmittance of spatial light modulator. Optik, Elsevier, 1999, 110 (2), pp.95-98. ⟨hal-00673975v2⟩