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Simple technique for the determination of the complex transmittance of spatial light modulator

Philippe Delaye 1 Gérald Roosen 1
1 Laboratoire Charles Fabry de l'Institut d'Optique / Manolia
LCFIO - Laboratoire Charles Fabry de l'Institut d'Optique
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)
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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⟩

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