Polarization-universal bandgap in periodically twisted nematics
Abbreviated Journal Title
LIQUID-CRYSTALS; SCATTERING; Optics
Cholesteric liquid crystals are known to possess bandgap and exhibit strong reflection for one of two circular polarizations of light. We suggest a periodically twisted nematic liquid crystal as a medium, which possesses bandgap and exhibits strong reflection for any polarization of normally incident light. Two possible structures are considered: a sinusoidal modulation profile and a rectangular modulation profile. In both cases, the maximum bandgap, of a periodically twisted structure is approximately twice as narrow as that of cholesterics. However, the polarization properties of these structures may make them more advantageous than cholesterics in a variety of applications. (c) 2006 Optical Society of America
"Polarization-universal bandgap in periodically twisted nematics" (2006). Faculty Bibliography 2000s. 6545.