Temperature-controlled random laser action in liquid crystal infiltrated systems
Year: 2002
Authors: Wiersma D., Cavalieri S.
Autors Affiliation: European Lab Nonlinear Spect, I-50019 Florence, Italy;
Ist Nazl Fis Mat, I-50019 Florence, Italy;
Univ Florence, Dept Phys,Florence, Italy
Abstract: We study an amplifying disordered dielectric material of which the scattering strength can be controlled externally via temperature. Such a system was realized by infiltrating liquid crystal and laser dye inside sintered glass powders. The random laser materials that were obtained this way can be brought below or above threshold by small changes in environment temperature, and the bandwidth of its emission can be tuned. We will go into the experimental details and the technical aspects of the realization of these systems, and show measurements on the diffusion constant and spectral properties of the emission.
Journal/Review: PHYSICAL REVIEW E
Volume: 66 (5) Pages from: 056612-1 to: 056612-5
KeyWords: Bandwidth; Diffusion; Light scattering; Magnetoresistance; Mathematical models; Phase transitions; Polarization; Temperature control, Infiltrated systems; Laser emission; Photonic band gaps; Photonic devices, Liquid crystalsDOI: 10.1103/PhysRevE.66.056612ImpactFactor: 2.397Citations: 55data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-10References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here