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Diffraction efficiency of stepped gratings using high phase-modulation spatial light modulators
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DOI：10.1016/j.optlaseng.2019.105910.png)
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When encoding diffractive optical elements (DOE) onto a spatial light modulator (SLM), the diffraction efficiency can be reduced because of the pixel nature of the SLM. These effects have been studied previously with displays having the standard phase depth of 2 pi radians. In this work we explore such effects with devices having a phase-dynamic range as large as 10 pi. We analyze the quantization effects when displaying blazed phase diffraction gratings in such devices. Experimental results are included where the number of discrete steps per period of the grating as well as the phase modulation depth is varied. Experimental results agree with theory
Keyword:
LIQUID-CRYSTAL
OPTICAL-ELEMENTS
LENSES
SLM
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