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Schematic illustration of the holographic exposure process and nematic liquid crystal alignment from a polarization exposure created from the interference of a right-handed (R.H.) and left-handed (L.H.) circularly polarized light, the Cartesian coordinate system, and angles and used to define the director configuration.
Optical microscope photograph of a polarization grating between crossed polarizers (a) at 0° for pitch at , (b) at 0° for pitch at , (c) at 45° for pitch at , (d) at 45° for pitch at , (e) for pitch at , (f) for pitch at .
Voltage vs transmission data for sample pitch sizes to determine threshold voltage for a grating pitch (◆), grating pitch (◻), grating pitch (∎), grating pitch (엯), and grating pitch (●). The inset shows the measured threshold voltage for different grating pitches and the model fit.
Experimental plot of diffraction efficiency for the grating pitch, with an inset showing the visible diffraction pattern (using ) from this grating pitch.
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