We show that a large nonlinearity in dye-doped liquid crystals is obtained for extremely low input light intensity, of the order of a few tens of μ W/cm2 and that it is mediated by the action of the photo-induced voltage on the specific surface coupling agent.
EPL (Europhysics Letters)
- Pub Date:
- October 2002
- Surface phenomena: alignment anchoring anchoring transitions surface-induced layering surface-induced ordering wetting prewetting transitions and wetting transitions;
- Orientational order of liquid crystals;
- electric and magnetic field effects on order;
- Polymers and organics