title: Two-wave mixing in chiral dye-doped nematic liquid crystals.
abstract: Two-wave mixing in nematic liquid crystals doped with dyes and chiral agents is studied. The photo-induced spatial modulation of the chiral structure, together with the diffusion anisotropy of the mixture, determine a relatively fast response time, a spatial resolution of 1 μm, and a maximum gain for circularly polarized interacting beams. The gain is insensitive to changes in linear polarization, while it varies with the grating period and with the pump-to-signal intensity ratio.
authors.affiliation: INLN, Université de Nice-Sophia Antipolis, CNRS, Valbonne, France.
authors.forename: D
authors.initials: D
authors.lastname: Wei
authors.forename: A
authors.initials: A
authors.lastname: Iljin
authors.forename: Z
authors.initials: Z
authors.lastname: Cai
authors.forename: S
authors.initials: S
authors.lastname: Residori
authors.forename: U
authors.initials: U
authors.lastname: Bortolozzo