title: Optical gain from polyfluorene keto defects in a liquid crystal mixture.
abstract: By means of confocal photoluminescence measurements and fs pump-probe spectroscopy, we observe the optical properties of phase separation in a mixture of polyfluorene and Liquid Crystals (LCs). The boundaries of LC-rich micro-domains display a large polarized gain region from keto defects stemming from the single-chain nature of this defect.
authors.affiliation: OPERA-photonics, Université libre de Bruxelles (U.L.B.), CP 194/5, 50 Avenue F.D. Roosevelt, 1050 Bruxelles, Belgium.
authors.forename: S
authors.initials: S
authors.lastname: Bolis
authors.forename: M
authors.initials: M
authors.lastname: Celebrano
authors.forename: L
authors.initials: L
authors.lastname: Ghirardini
authors.forename: M
authors.initials: M
authors.lastname: Finazzi
authors.forename: C
authors.initials: C
authors.lastname: Botta
authors.forename: J
authors.initials: J
authors.lastname: Beeckman
authors.forename: P
authors.initials: P
authors.lastname: Kockaert
authors.forename: T
authors.initials: T
authors.lastname: Virgili