title: Statistical analysis of random lasing emission properties in nematic liquid crystals.
abstract: A statistical analysis of random lasing events observed in dye-doped nematic-liquid-crystal films is reported. The occurrence of random laser action in such complex fluids is due to residual resonances in the multiple scattering of spontaneously emitted photons. The Shannon entropy and a local-Poisson test are used here in order to quantitatively characterize the chaotic behavior of laser spikes and gain further understanding of the mechanisms underlying the lasing effect in strongly scattering organized fluids arising by an unexpected interplay of localization and amplification.
authors.affiliation: Dipartimento di Fisica, Università della Calabria, and CNISM-Unità di Cosenza, Ponte P. Bucci, Cubo 31C, Rende CS, Italy.
authors.forename: Sameh
authors.initials: S
authors.lastname: Ferjani
authors.forename: Luca
authors.initials: L
authors.lastname: Sorriso-Valvo
authors.forename: Antonio
authors.initials: A
authors.lastname: De Luca
authors.forename: Valentin
authors.initials: V
authors.lastname: Barna
authors.forename: Rossana
authors.initials: R
authors.lastname: De Marco
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Strangi