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Fast switching cholesteric liquid crystal optical beam deflector with polarization independence

Tijdschriftbijdrage - Tijdschriftartikel

Optical beam deflectors based on the combination of cholesteric liquid crystals and polymer microgratings are reported. Dual frequency cholesteric liquid crystal (DFCh-LC) is adopted to accelerate theswitching from the homeotropic state back to the planar state. Polarization independent beam steeringcomponents are realized whose transmission versus the polarizing angle only varies 4.4% and 2.6%for the planar state and the homeotropic state, respectively. A response time of 451 ms is achievedfor DFCh-LC-grating beam deflectors, which is fast compared to other nematic LC beam steerers withsimilar LC thickness.
Volume: 7
Aantal pagina's: 1
Jaar van publicatie:2017