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7 September 2018 Numerical model of diffraction effects of pixelated phase-only spatial light modulators
Weronika Zaperty, Tomasz Kozacki
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Proceedings Volume 10834, Speckle 2018: VII International Conference on Speckle Metrology; 108342A (2018) https://doi.org/10.1117/12.2319739
Event: SPECKLE 2018: VII International Conference on Speckle Metrology, 2018, Janów Podlaski, Poland
Abstract
In this work, we investigate numerical models of selected spatial light modulators (SLMs) to provide an accurate simulation of diffractive effects present in optoelectronic hologram reconstruction, i.e. DC term and higher orders. We focus on reported most influential parameters: (a) fill factor, (b) amplitude modulation of dead space (effect of surface structure between adjacent pixels), (c) phase of dead space (phase modulation profile between adjacent pixels), (d) spatial influence of adjacent pixels on phase modulation value, and (e) number of phase quantization levels. The impact of each factor on modeled diffraction efficiency and orders distribution is investigated. We consider phase-only reflective models of LCoS SLMs on the basis of commercially available architectures. Additionally, the pixelated SLM model is tested on the example of two practical cases.
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Weronika Zaperty and Tomasz Kozacki "Numerical model of diffraction effects of pixelated phase-only spatial light modulators", Proc. SPIE 10834, Speckle 2018: VII International Conference on Speckle Metrology, 108342A (7 September 2018); https://doi.org/10.1117/12.2319739
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KEYWORDS
Spatial light modulators
Diffraction
Holograms
Liquid crystal on silicon
Phase modulation
Computer simulations
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